same day shipping clock icon
free shipping box icon
price tag icon

GM 5.0 Marine Engines

SKU:
ATK-DM04.1
Availability:
Ship 7-10 Days
List Price: $3,135.80
Starting At: $2,132.34
You save $1,003.46

Earn Captains Club Points Learn More

FREQUENTLY BROUGHT TOGETHER

  • Choose Options

PRODUCT DESCRIPTION

GM 5.0 Marine Engines

ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance & long-term durability. There are over 150 processes involved in the remanufactuing each ATK engine that are desinged to meet or exceed O.E. specifications. 

Featured procedures include

  • Engine blocks are magnafluxed, cylinders bored and precision-honed, and main saddles line-honed to exacting O.E. specifications
  • Camshaft bearings line-bored for accurate center-to-center clearance
  • Engine blocks and cylinder heads precision surfaced to insure proper sealing
  • Cylinder heads magnafluxed or dye checked and machined for three-angle valve seats
  • Crankshafts stress-relieved, precision ground and micro-polished for optimum durability and surface finish
  • Camshafts precision ground or replaced with new to maintain the O.E. profile
  • Each engine is tested for compression, oil pressure, oil leaks, unusual engine noise, and general operating condition before shipment
  • Pistons and connecting rod assemblies are balanced in sets to achieve minimum engine vibration
  • Oil pump or oil pump kit is supplied with each engine
  • Premium installation gasket set is supplied with each engine
  • All bearings are replaced with new
  • Timing belts, chains, gears are replaced with new
  • All rubber products are O.E. quality (i.e. main seals, valve stem seals, cam seals)
  • All ATK remanufacturing facilities are ISO 9001 and QS 9000 certified
  • No Core Charge
  • Free Freight to anywhere in the continental U.S

18 Month No Fault Warranty

  • Unlimited Hours
  • Includes Labor, Towing & Fluids

 Marine Application Chart Below - Call Customer Service for more details 1-877-388-2628

# Year Description Part #
1 1976-1985 GM 5.0 / 305/ 230HP 2pc rear seal, flat tappet cam, dipstick on port side of block. Casting number: 909, 979, 776, 777, 371, 778 ATK-DM04
2 1976-1985 GM 5.0 / 305/ 230 2pc rear seal, flat tappet cam, dipstick on starboard side of block. Casting number: 909,979,776,777,371,778 ATK-DM07
3 1976-1985 GM 5.0 / 305/ 230HP Reverse rotation,  2pc rear seal, flat tappet cam, dipstick on port side of block. Casting number: 909,979,776,777,371,778 ATK-DM04R
4 1976-1985 GM 5.0 / 305/ 230HP Reverse rotation,  2pc rear seal, flat tappet cam, dipstick on starboard side of block.  Casting number: 909,979,776,777,371,778 ATK-DM07R
5 1985-1987 GM 5.0 / 305/ 230HP Reverse rotation, 1 pc rear seal, valve covers bolt on perimeter, head casting 416, 301, 601, flat tappet cam. Use DM95 for Std rotation Casting number: 551 ATK-DM95R
6 1985-1987 GM 5.0 / 305/ 230HP Std rotation, 1 pc rear seal, valve covers bolt on perimeter, head casting 416, 301, 601, flat tappet cam. Use DM95R for Reverse rotation Casting number: 551 ATK-DM95
7 1987-1995 GM 5.0/305/ 230HP Non Roller, 1 pc rear main, Carbureted, steel front cover.  Casting number: 535,551,627,058  ATK-DMB3
8 1987-1995 GM 5.0/305/ 230HP Complete with oil pan, front cover and valve covers installed, Non Roller, 1 pc rear main, Carbureted, steel front cover.  Casting number: 535,551,627,058  ATK-VMB3
9 1987-1995 GM 5.0/305/ 230HP Reverse rotation, Non Roller, 1 pc rear main, Carbureted, steel front cover.   Casting number: 535,551,627,058  ATK-DMB3R
10 1987-1995 GM 5.0/305/ 230HP Reverse  rotation, Complete with oil pan, front cover and valve covers installed, Non Roller, 1 pc rear main, Carbureted, steel front cover.  Casting number: 535,551,627,058  ATK-VMB3R
11 1996-2006 GM 5.0 / 305/ 230 Vortec,  SAE threads, Roller Cam, Plastic Front Cover(not included). 8 bolt intake  Casting number: 880, 878  ATK-DMM2
12 1996-2006 GM 5.0 / 305/ 230HP Vortec,  Complete with oil pan, front cover and valve covers installed, SAE threads, Roller Cam, Plastic Front Cover w/sensor hole. 8 bolt intake  Casting number: 880, 878  ATK-VMM2
13 1996-2006 GM 5.0 / 305/ 230HP Vortec,  Complete with oil pan, front cover and valve covers installed, SAE threads, Roller Cam, Plastic Front Cover w/o sensor hole. 8 bolt intake  Casting number: 880, 878  ATK-VMM2S

How to Video

California Residents: warning sign WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov

PRODUCT REVIEWS

QUESTIONS & ANSWERS

OTHER DETAILS

Google Product Type:
Engine Parts

CUSTOMERS ALSO VIEWED

GM 5.7 Marine Engines
List Price: $3,159.60
Starting At: $2,306.90

GM 5.7 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance &...

Choose Options
Ford 5.0 Marine Engines
List Price: $2,225.82
Starting At: $2,004.03

Ford 5.0 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance...

Choose Options
GM 4.3 Marine Engines
List Price: $2,407.83
Starting At: $2,083.49

GM 4.3 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance &...

Choose Options
GM 7.4 Marine Engines
List Price: $4,004.64
Starting At: $3,403.99

GM 7.4 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance &...

Choose Options
Ford 5.8 Marine Engines
List Price: $2,947.10
Starting At: $2,004.03

Ford 5.8 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance...

Choose Options
List Price: $4,818.00
Starting At: $3,276.24

Ford 7.5 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance...

Add to Cart
Sterndrive Engineering Repl Mercruiser Drive Alpha One GenII
List Price: $1,974.00
Starting At: $1,645.00

Complete Replacement Outdrive for Mercruiser Alpha One Gen II Drives. 1991 - Present. Brand New complete drive. Available in Standard Rotation and Counter Rotation (CR added to SKU number). 3 Year...

Choose Options
List Price: $4,818.00
Starting At: $3,276.24

Ford 7.4 Marine Engines ATK premium quality marine engines are designed & built specifically for boating. No matter how you use your boat, ATK Marine engines will provide maximum performance...

Add to Cart
Sierra 18-1976-2 Mercruiser Manifold Elbow
List Price: $172.99
Starting At: $121.49

Sierra 18-1976-2 Mercruiser Manifold Elbow Fits most Mercruiser V6 and V8 applications, 7 degree (4" O.D. Riser). Unlike automotive engines, all marine inboards have exhaust risers that feature a...

Add to Cart