Marine Master Engine Rebuild Kits
or Overhaul Kits
For Chevrolet, Chrysler, Ford, OMC, Mercury Marine

Engines: 2.3L Ford marine 1985-1993 single plug, 2.5L/153 cu. in. Chevrolet marine 1962-1970 & other years, 3.7L 4 cylinder Mercury Marine 1970-2000, 3.0L/181 cu. in. Mercruiser marine & industrial 1980-1992 & later 4 cylinder, 218/230 cu. in. Flat head marine & industrial 1934-54, 4.1L/250 cu. in. 1966-1984 Chevrolet Mercruiser marine, 4.3L 1985-1986 OMC Chevrolet V6 marine, 4.3L 1987-1995 V6 OMC & Mercruiser marine, 4.3L 1987-92 Marine V6 w/roller cam, 4.3L 1993-1995 marine V6 w/ & w/o balance shaft, 4.3L 1992-1995 V6 marine w/roller cam, 4.3L 1996-2007 Mercruiser Chevrolet V6 w/balance shaft Vortec, 289 Ford 1968 marine V8, 5.0L/305 cu in. Chevrolet V8 1987-1995 marine, 5.0L/305 cu. in. Chevrolet V8 1987-1993 marine w/roller cam, 5.0L/305 cu. in. 1996-2002 Vortec V8 marine, 5.7L/350 cu. in. V8 1969-1985 Chevrolet reverse rotation Marine Chris Craft etc., 5.7L/350 cu. in. V8 1967-1986 Chevrolet marine, 5.7L/350 cu. in. V8 1987-1995 Chevrolet marine, 5.7L/350 cu. in. V8 1987-1995 reverse rotaton Chevrolt marine, 5.7L/350 cu. in. V8 1992 & later Chevrolet marine, 5.7L/350 cu. in. 1996-2002 Marine Vortec, 351W Ford V8 1987-1993 marine, 7.4L/454 1971-1990 V8 GEN IV Chevrolet marine, 7.4L/454 cu. in. V8 1971-1990 GEN IV Chevrolet reverse rotation w/oval port heads, 7.4L.454 V8 1991-1997 GEN V Chevrolet marine w/oval port heads, 7.4L.454 cu. in. GEN IV Chevrolet Bravo I w/rectangular port heads, 7.4L/454 cu. in. GEN VI V8 1996-2001 marine w/roller cam, 7.5L/460 cu. in. Ford V8 marine, 8.2L/502 cu. in. V8 1970-2000 marine w/roller cam with K/B pistons

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655

1-801-754-5338 or Toll free 1-866-700-5877 Contact us anytime 24-7
Hours 9-5 Monday-Friday

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MASTER ENGINE REBUILD KITS & PARTS

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Also see Crankshaft Kits for import and domestic crankshaft kits with bearings.

Call Toll Free to Order and Purchase Parts only at: 1-866-700-5877
Hours: 9:00 AM to 5:00 PM Monday - Friday Mountain time (Utah) Affordable prices on all kits.

  • Suffix MK = master engine rebuild kit.
  • Suffix EK = engine rebuild kit, is a master engine rebuild kit less: camshaft, lifters and timing set.
  • Suffix RRP = Re-ring kit, includes: gasket set, rings, main bearings, rod bearings,
    and (thrust washers if seperate from main bearings).

Fill out the Order Form or Contact us anytime 24-7 Hours 9-5 Monday-Friday or call toll free to order at: 1-866-700-5877 to check stock & pricing.

Prices have changed on master kits & engine kits which varies because of different parts & options & for different years!!!!

  • 2.3L Ford Marine master engine rebuild kits and Marine engine rebuild kit
    1985-93 2.3L OHC Ford single plug
    master engine rebuild kit Fel Pro w/performance head gasket (1035)
    & brass freeze plugs F140LLMK.M $729.22.
  • 2.5L 1962-70 & other years Chevrolet Marine
    Need to know if the oil pan has a 1-piece gasket or 4-piece gaskets.
    • 2.5L/153 cu. in. 4-cyl. master engine rebuild kit CH153MK.M $673.88
    • 2.5L/153 cu. in. 4-cyl. engine rebuild kit CH153EK.M $482.01
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH153RRP.M $313.73
  • 2.5L Chevrolet Marine master engine rebuild kit
    1962-70 and other years Chevy (Mercruiser) 2.5L 153. cu. in.
    This is a custom kit for marine: master engine rebuild kit. $698.14 (updated 08/16). This kit includes: pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs, marine gasket set, camshaft, lifters, timing set, and oil pump. Need to know if the oil pan has a 1-piece gasket or 4-piece gaskets.
  • 3.7L 1970-00 Mercury Marine 4 cylinder (460 head)
    Ring set is for 8 cylinders - use 1/2 and discard extras.
    Includes camshaft w/cam driven water pump only
    • 1970-00 4 cyl. marine master engine rebuild kit F470MK $925.27
    • 1970-00 4 cyl. marine engine rebuild kit F470EK $925.27
  • 3.0L/181 cu. in. 1980-92 and later 4 cyl. Mercruiser Marine & Industrial
    (specify rod bearings - small J. or large J.)
    (does not include intake manifold gasket)
    Flat top pistons or dished pistons
    • 3.0L/181 cu.in. OHV 4 master engine rebuild kit CH181MK $952.25
    • 3.0L/181 cu.in. OHV 4 engine rebuild kit             CH181EK $554.75
  • 218. /230 cu. in. 1949/ 1934-54 Flat Head engine
    car. & Truck     - Industrial and Marine
    Does not include: camshaft or lifters (N/A).
    • 6. cylinder master engine rebuild kit CR230MK $1,335.39
      This kit includes: pistons, wrist pins, rings, main bearings, rod bearings, cam bearings, freeze plugs, complete gasket set, wrist pin bushings, timing kit and oil pump. engine rebuild kit CR230EK $1,151.10
    • The Re-ring kit is $463.49 - This kit includes: gasket set, main bearings,
      rod bearings, and rings
  • 4.1L/250 cu. in. 1966-84 Chevrolet Mercruiser Marine master engine rebuild kit $622.38
    This kit includes: pistons, wrist pins, rings, main bearings, rod bearings, cam bearings, brass freeze plugs, FelPro marine head gasket set, FelPro marine bottom end gasket set, camshaft, lifters, timing set and oil pump. We will need to know if the engine has a non-integrated cylinder head, or integrated cylinder head.
    • 4.1L/250/ cu. in. L6 master engine rebuild kit CH250MK.M $622.38
    • 4.1L/250 cu. in. L6 engine rebuild kit CH250EK.M $459.23
    • Re-ring kit, includes: rings, main bearings, rod bearings, and FelPro marine upper & lower gasket set CH250RRP.M $312.60
  • 4.3L 1985-86 OMC Chevy V6
    w/flat top or dished pistons, no balance shaft, 1-piece rear seal, 1-piece oil pan gasket
    • master engine rebuild kit marine $685.57 w/cast rings CH262MK.M
    • master engine rebuild kit marine $725.62 w/moly rings CH262MK.M
  • 4.3L 1987-95 V6 OMC & Mercruiser
    master engine rebuild kit marine $860.79 to $878.00 depending on year.  (CH262LMK.M 1987-90 or CH262LZMK.M 1991-95) This kit includes: either flat top or dished pistons, wrist pins, cast rings, Clevite main & rod bearings, cam bearings, brass freeze plugs, FelPro marine gasket set (upper & lower), camshaft, roller lifters, timing set, and Melling oil pump.
    We need to know the engine code is T or not (located by the water pump on the block on later years). We need to know if the oil pan gasket is one piece or 4 piece. And if the rear seal is a one piece (in a circle) or two piece (2 halves). The price is the same.
    • Either kit above less camshaft and roller lifters is less -$233.79
  • 4.3L 1987-92 Marine (roller cam)
    • 4.3L/262 c.i. V6 master engine rebuild kit CH262LMK.M $1095.10
    • 4.3L/262 c.i. V6 engine rebuild kit CH262LEK.M $670.57
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH262LRRP.M $450.90
      • less camshaft and roller lifters is less -$233.79
      • We need to know if the oil pan gasket is one piece or 4 piece. And if the rear seal is a one piece (in a circle) or two piece (2 halves)
  • 4.3L 1993-95 Marine w/ & w/o balance shaft
    Specify if engine ID starts with 'T' or not. ID is by the water pump. w/roller lifters. Non-Vortec.
    • 4.3L/262 c.i. V6 master engine rebuild kit CH262LZMK.M $1096.42
    • 4.3L/262 c.i. V6 engine rebuild kit CH262LZEK.M $708.47
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH262LZRRP.M $483.42
    • less camshaft and roller lifters is less -$233.79
    • We need to know the engine code is T or not (located by the water pump
      on the block on later years).
      We need to know if the oil pan gasket is one piece or 4 piece.
      And if the rear seal is a one piece (in a circle) or two piece (2 halves).
      The price is the same.


Fel Pro Marine Head Gasket Set for engines w/balance shaft

  • 4.3L 1992-95 Marine w/Roller cam Chevy V6
    Vortec w/balance shaft
    Does not include bal. shaft bearing or bushing.
    Specify if engine ID starts with 'T' or not. ID is by the water pump.
    • 4.3L/262 c.i. V-6 Marine master engine rebuild kit CH262LLWMK.M $987.35
    • 4.3L/262 c.i. V-6 engine rebuild kit CH262LLWEK.M $602.02
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH262LLRRP.M $345.21
      This kit includes: hypereutectic pistons, wrist pins, premium rings, main bearings, rod bearings, cam bearings (need to know if engine code is 'T' or not - code in by the water pump) (does not include balance shaft bearings), brass freeze plugs included, FelPro marine head gasket set and marine bottom end set (does not include head bolts), camshaft, roller lifters, timing set (does not include balance shaft gears), and Melling oil pump included.
      The part number and price for the balance shaft bearings are: balance shaft bearing BCA 106L $17.53 (out of stock) or balance shaft bushing. F/M 3204DR $11.21 (in stock)
    • The part number and price for the head bolts are 38-125 $32.71 set.
  • 4.3L 1996-07 Mercruiser Chevy V6
    (w/balance shaft) Vortec engine
    • master engine rebuild kit CH262LXMK.M (marine) $985.11
      The parts below are for the 4.3L marine V6 that has balance shaft in the engine. The marine master engine rebuild kit price is $932.68 plus $18.00 shipping if all parts are shipped from the same location. This kit includes: hypereutectic pistons, wrist pins, premium rings, main bearings, rod bearings, cam bearings (need to know if engine code is 'T' or not) (does not include balance shaft bearings), brass freeze plugs included , FelPro marine head gasket set and marine bottom end set (does not include head bolts), camshaft, roller lifters, timing set (does not include balance shaft gears), and Melling oil pump included. Does not include plastic timing cover if equipped.
    • The part number and price for the plastic timing cover is 500262 $52.65 extra.
      The part number and price for the balance shaft bearings are: balance shaft bearing BCA 106L $17.53 (out of stock) or balance shsft bushing. F/M 3204DR $11.21 (in stock)
    • The part number and price for the balance shaft gears is 2555S $88.12 85.71 85.71.
    • The part number and price for the head bolts is 38-125 $32.71 set.
  • 289/ 1968 Ford Marine
    • 1964-68 V-8 - Marine master engine rebuild kit F289MK.M $743.99
    • 1964-68 V-8 - Marine engine rebuild kit F289EK.M $581.67
    • Marine Re-ring kit - includes: rings, main bearings, rod bearings, and gasket set F389RRP.M $425.38
  • 5.0L/305. cu. in. Chevrolet V8 1987-95 Marine w/hyd. lifers (non-roller)
    w/steel timing cover, w/1-piece rear main seal, w/Center bolt design valve covers; w/1-piece oil pan gasket
    • master engine rebuild kit - Marine CH305TMK.M $782.85
    • engine rebuild kit CH305TEK.M $655.77
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH305TRRP.M $473.39
  • 5.0L/305. cu. in. Chevrolet V-8 1987-93 Marine w/roller cam
    w/steel timing cover, w/1-piece rear main seal, w/Center bolt design valve covers; w/1-piece oil pan gasket
    • master engine rebuild kit - car. w/roller cam CH305LRMK.M $1014.28
    • engine rebuild kit - CH305LREK.M $646.35
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH305LRRRP.M $471.84
  • 5.0L/305 cu. in. 96/02 V-8 Vortec Marine
    Need to know if the engine has a plastic timing cover or metal.
    w/steel timing cover, w/1-piece rear main seal, w/Center bolt design valve covers; w/1-piece oil pan gasket
    • master engine rebuild kit - car. w/roller cam CH305MMK.M $1204.82
    • engine rebuild kit - CH305MEK.M $736.22
    • Re-ring kit, includes: rings, main bearings, rod bearings, and gasket set CH305MRRP.M $461.30
  • 5.7L/350 V8 1969-85 350. Chevrolet reverse rotation Marine Chris Craft, etc.
    master engine rebuild kit Custom kit $1025.61 plus $18.00 shipping if all parts are shipped from the same location.
    This kit includes: pistons, wrist pins, ring, main bearings, rod bearings, cam bearings, brass freeze plugs, marine upper and lower FelPro gasket set, reverse rotation marine camshaft, lifters, timing gears (for reverse rotation), reverse rotation front and rear seal, and oil pump.
  • 5.7L/350 V8 1967-86 Chevrolet Marine
    The part number and price for the marine master engine rebuild kit is
    CH350MMK $688.58 (1986 1-piece rear seal or 1967-85 2-piece rear seal) plus $18.00 shipping if all parts are shipped from the same location.
    This kit includes: flat top or dished pistons, wrist pins, moly rings, main bearings, rod bearings, cam bearings, brass freeze plugs, Fel Pro marine gasket set (need to know if 2-piece rear seal or 1-piece rear seal), camshaft*, lifters, timing set, and oil pump.
    You can change the camshaft to a dual energy Competition Cams camshaft for $107.04 extra (= $795.62). RPM range is 1200-5500.
  • 5.7L/350 V8 1987-95 Chevrolet Marine
    master engine rebuild kit with valve covers that bolt around the edge, 1-piece real seal, 1-piece oil pan gasket, steel timing cover on engine, with cast rings, w/hypereutectic pistons (not flat top) or flat top pistons . (non-plastic timing cover).
    This kit includes: hypereutectic pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs, FelPro Marine head set & bottom end set, camshaft, lifters (non-roller), timing set, and Melling oil pump (either 5/8" or 3/4" inlet).
  • 5.7L/350 V8 1987-95 reverse rotation Chevrolet Marine
    master engine rebuild kit CH350LTMK, Marine $1097.91 with valve covers that bolt around the edge or center bolt valve covers, 1-piece real seal, 1-piece oil pan gasket, steel timing cover on engine, with cast rings, dished pistons or flat top pistons- $1097.91. (non-plastic timing cover). This kit includes: pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs,
    FelPro head gasket set and bottom end gasket set, reverse rotation camshaft, lifters, reverse rotation timing gears, reverse rotation rear seal, reverse rotation front seal, and oil pump (either 5/8" or 3/4" inlet). The reverse rotation camshaft is Melling 22125 $364.03 .4005" intake lift w/1.5 rocker arms. .4095" exhaust lift w/1.5 rocker arms. 202. degrees intake duration @.050" lift. 213. degrees exhaust duration @.050" lift.
  • 5.7L/350 V8 1992 $15.58 & later Chevrolet Marine
    with center bolt valve covers, 1-piece rear seal, 1-piece oil pan gasket, hyd. lifters (non-roller), with moly rings, with steel timing cover on engine, w/flat top or dished pistons - custom kit - $738.84. With Competition Cams dual energy or extreme marine cam $859.16.
    • This kit includes: flat top or dished pistons, wrist pins, moly rings, main & rod bearings, cam bearings, brass freeze plugs, Marine gasket set, camshaft, lifters, timing set, and Melling oil pump. (If your engine has the plastic timing cover then the part number and price for the plastic timing cover is 500350 $29.80 and must be replaced).
    • We will need to know if your engine has the .40"/.41" tooth width timing set or the .275"/.285" tooth width timing set. We also need to know if the oil pump has a 5/8" inlet or 3/4" inlet (oil screen tube size).
    • The specs. on the extreme marine Competition Cams camshaft is HYDRAULIC - Good for inboard/outboard pleasure boat, skiing and good economy. Hyd. Hyd. 1000. to 5000 $21.75 RPM 12-232-3 XM256H 256 262 (212 218. @.050") .447 .462 lift 112°
    • The specs. for the dual energy cam is HYDRAULIC - Strong torque and mileage. Excellent RV and towing cam. Smooth idle. Hyd. Hyd. 1200. to 5500. RPM 12-207-249 255DEH 255. 261 203 $16.38 212 $10.45 (@.050") .421 .451 lift 110. °
    • The kit above with hyd. roller camshaft & roller lifters is $1238.63. The hyd. roller camshaft specs. are: intake .414 lift, duration @ .050” is 191, advertised duration is 261 w/111 center line on both intake & exhaust. Exhaust .428 lift, duration @ .050” lift is 194, advertised duration is 263. Both are specs. w/1.5 ratio rocker arms. The specs. change with 1.52 or 1.6 ratio rocker arms.

  • 5.7L/350 cu. in. 1996-02 Marine - Vortec
    5.7L 1996-02 (and possibly later) 350. Mercruiser Vortec Chevrolet Marine This is a custom kit $1383.50. This kit includes: dish (.100") hypereutectic pistons, wrist pins, premium rings, main bearings,
    rod bearings, cam bearings, brass freeze plugs, Marine gasket set (w/1-piece oil pan gasket, for plastic timing cover, center bolt valve coves), camshaft, roller lifters, timing set, and oil pump. This kit may also fit up to 2005. but we can not confirm all the parts are correct!!!!     The part number and price for the plastic timing cover is 500350 $29.80 w/sensor or 500350WO $31.23 w/o sensor $44.54.
  • 351W Ford 1987-93 Marine with one piece oil pan gasket or 4 piece oil pan gasket
    351W - V-8 master engine rebuild kit (non-roller) $767.78. This kit includes: pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs, FelPro Marine upper and lower complete gasket set, camshaft, lifters, timing set and Melling oil pump. The kit less camshaft & lifters is -$110.13.
  • 7.4L/454 V8 1971-90 Gen IV Chevrolet Marine
    w/oval port heads & 2-piece rear seal & 4 piece oil pan gasket
    454 Gen IV - V-8 master engine rebuild kit CH454.M $914.13. (With rectangular port cylinder heads $924.13). This kit includes: either flat top or dished pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs, Marine Fel Pro upper & lower gasket set, stock camshaft, lifters, double roller H.D. timing set and Melling oil pump.
  • 454. 1971-90 V8 Gen IV Chevrolet Marine reverse rotation w/oval port heads.
    7.4L/454 cu. in. 71/90 Marine Reverse Rotation
    • 454 Gen IV reverse rotation engine, master engine rebuild kit $1350.16.
      All parts for the reverse rotation engine.||
    • CH454MK.MR $1350.16.
    • 8 STERLING H661CP $31.72 Hypereutectic Cast Piston flat top
      or
      8 H518CP $34.77 Sterling Hypereutectic Pistons (x8) (Dished)
    • 1 HASTING HA-683 $52.37 8-CYL CAST RING SET.
    • 8 CLEVITE CLE-CB743P $9.16 Connecting Rod Bearing (x8).
    • 1 CLEVITE CLE-MS829P $71.41 Main Bearing Set.
    • 1 Dura Bond CH12 $28.52 CAM BEARING SET.
    • 1 MELLING M77 $63.50 OIL PUMP.
    • 16 HA817 $4.91 Tappets (x16) Lifters
    • 1 MELLING 22218 $386.21 CAMSHAFT reverse rotation
    • 1 FELPRO Marine FELP-17240 $257.52 HEAD GASKET SET.
    • 1 FELPRO marine FELP-17140 $76.32 CONVERSION GSKT SET.
    • 1 MPE102BR $28.56 Melling Automotive brass freeze plugs
    • 1 Engine Pro 2532S $265.56 Engine Pro TIMING GEAR SET.
    • Extra 17740 $104.84 reverse rotation 2-piece rear seal
  • 7.4L454 V8 1991-97 Gen V Chevrolet Marine
    w/oval port heads & 1-piece rear seal & 1 piece oil pan gasket in kit
    • 454 Gen V - V-8 master engine rebuild kit with roller lifters $1043.82
      This kit includes: pistons, wrist pins, moly rings, main bearings, rod bearings, cam bearings, brass freeze plugs, Marine FelPro upper and lower gasket set, roller lifters, timing set, and oil pump. W/camshaft $1262.69. Updated 05/15

      According to FelPro Gen IV is 1990 and earlier, Gen V is 1991-97 and Gen VI is 1998 $12.18 and later Marine engines
  • 7.4L/454 V8 Gen IV Chevrolet Bravo I w/rectangular port heads
    • 454 V-8 w/2-piece real seal marine master rebuild kit $1385.21
      This kit includes: SRP forged flat top piston (for 6.385" length connecting rod), wrist pins, Speed Pro plasma moly rings, main bearings, rod bearings, cam bearings, brass freeze plugs, Fel Pro upper and lower marine gasket set, Cloyes true roller timing set, and Melling oil pump.
    • Scat forged steel stoker crankshaft 4-454-4250-6385 $904.80. (4.250" stroke)
    • H-beam steel 6.385" length connecting rods 10-454HB635-8 $448.34.
    • Competition Cams roller tip rocker arms 1411-16 $194.74.
    • Competition Cams wear plate (for camshaft) 203 $16.38.
    • Competition Cams thrust bearing (for camshaft)3110TB $15.93.
    • Competition Cams hyd. roller camshaft for marine 11-445-8,
      hyd. roller lifters 854-16 = $916.79 for the camshaft and lifters.
    • Dart cast iron rectangular port complete cylinder heads
      (Iron Eagle) 15100112 $1949.68 (with 2.250" intake valve,
      1.880" exhaust valves, dual springs, retainers, locks, screw
      in studs, 3/8" guide plates, etc. - assembled. (for both heads).
  • 7.4L/454 cu. in. 96/01 Marine V-8 roller cam GEN VI
    • 7.4L/454 c.i. V8 marine master engine rebuild kit CH454LRTMK.M $1327.77
    • 7.4L/454 c.i. V8 marine engine rebuild kit CH454LRTEK.M $821.38
    • Re-ring kit marine , includes: rings, main bearings, rod bearings, and marine gasket set CH454LRTRRP.M $525.64
  • 7.5L/460 V8 Ford Marine = master engine rebuild kit F460MK $1,003.05.
    This kit includes: hypereutectic pistons, wrist pins, cast rings, main bearings, rod bearings, cam bearings, brass freeze plugs, Marine FelPro head gasket set & bottom end gasket set, camshaft, lifters, timing set and oil pump.
  • 7.5L/460 V-8 1968-85 Marine
    Specify if oil pump is push in screen or bolt on screen Performance design head gskts. incl.; Premium valve stem seals incl. Std. rotation; w/Two-piece rear main bearing seal & One-piece oil pan gskt.; PermaDry® molded rubber oil pan gskt. incl. (4-piece oil pan gaskets available)
    • 1968-6/28//85 - master engine rebuild kit F460MK $1,003.05
    • 1968-6/28/85 - engine rebuild kit F460EK $690.00
    • Re-ring kit - includes: rings, main bearings, rod bearings, and gasket set F460RRP $375.11
  • 8.2L/502. cu.in. 1970-2000 V-8 Marine w/roller cam, with K/B pistons
    This kit includes: Flat top or domed pistons, wrist pins, premium rings, main bearings, rod bearings, cam bearings, brass freeze plugs, marine FelPro upper & lower gasket set, timing set, and Melling oil pump. master engine rebuild kit CH502MK $1,602.53 does not include: camshaft or lifters
    Lifters are available separately
    Pistons are available in .004" (4.470""), .034" (4.500"), .064" (4.530"), .100" (4.566") and .134" (4.600") over bore.

    Example: Gen V w/EFI, w/flat top pistons:
    CH502MK $1,602.53 Marine Master engine rebuild kit
    This kit includes:
    • 1 Keith Black 034 KB173 KB Hypereutectic Piston Set Shipped from Phoenix, AZ
    • 1 HASTINGS 030 HA-2M5589 $265.39 HASTINGS RACE 8-CYL RING SET
    • 8 CLEVITE CLE-CB743P $9.16 Connecting Rod Bearings
    • 1 CLEVITE CLE-MS829P $71.41 Main Bearing Set
    • 1 DURA-BOND CH12 $28.52 CAM BEARING SET
    • 1 FELPRO FELP-17281 $260.52 HEAD GASKET SET MARINE
    • 1 FELPRO FELP-17145 $138.19 CONVERSION GSKT SET MARINE
    • 1 ENGINE PRO 3137 $19.02 Timing Set
    • 1 MELLING M77 $63.50 PUMP-OIL
    • 1 MELLING MPE275BR $20.45 FREEZE PLUG KITS BAG BRASS
    • The standard bore of the 502 is 4.466" So the pistons are .034" which puts
      the bore at 4.500". So the rings are .030 Hastings Race rings at 4.500" bore.
    • Available with SRP Forged small dome pistons extra 4.5" bore (.034" over size)

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