GM 3.0 Long Block Marine Engine

$2,495.00

his remarkable engine is a direct replacement for Mercrusier, Volvo, and OMC Marine applications between 1991 and 2013. Every unit has been built with quality parts.

Quick Info SKU: 30L-350MSB-MSE-XP Categories: Tag:

Description

OEM REPLACEMENT

Our precision remanufactured 3.0 Liter GM long block Marine block

First, every 3.0L marine long block must pass our magnaflux inspection designed to detect any microscopic flaws or cracking. Blocks are then thermally cleaned, followed by steel microblasting until they achieve a brilliant appearance. Once a block is fully cleaned, we begin our precision boring and honing process. Using a carbon two-stage power hone, we can maximize the sealed area and ensure that it precisely meets the recommended RMA readings. Computerized micrometers are used to resize rods in strict accordance with factory recommendations. Crankshafts are precision cut and micropolished to achieve a 12 RMA reading or better.

Custom marine long block assembly

We meticulously mill each Cylinder Head until perfect alignment and sealing of the head gasket is achieved. Our Cylinder Heads are assembled using a new valve stem and seals that feature the latest in high temperature technologies increasing heat resistance and longevity. These polished Cylinder Heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Before each head is mated their block using the correct torque valve we vacuum test all seals for proper seating. Triple angled cutters are used to machine the valve seats ensuring proper pressures and flow. All valves, valve springs and valve guides must pass our stringent process of meeting and exceeding OEM specifications. O.H.C. Heads are aligned for proper bore consistency. Every remanufactured long block has been specifically engineered to help improve the inherent flaws and failure points that can be found in many of today's engines.

Cylinder head configuration, carbureted versus fuel injection

GM's design for the cylinder head allows it to be configured for either fuel injection or carbureted applications. Plugs are used by GM to close off the injector holes for carbureted applications. Most of our engines ship with the plugs in place for carb applications. If you need fuel injection, the plugs can be removed.

rebuilt engine

Additional information

Condition

Vehicle Year

, , , , , , , , , , , , , , , , , , , , , ,

Included With Marine Long Block

Testing

Compatible Models

Mercrusier, Volvo, OMC

Build Type

Cubic Inches

Liters

Warranty

Platinum 18 Month Unlimited Hours Warranty
Coverage Details:
  • This is a nationwide warranty valid throughout the continental United States.
  • No restocking or return shipping fees are charged on approved warranty claims. Restocking and shipping fees may apply only when a customer requests a return for a non-defective engine or when the return originates outside the continental United States.
  • The warranty period begins on the original date of purchase and remains valid for (18) months.
Parts and Labor Coverage:
  • Warranty reimbursement includes cost of replacement, engine, fluids, parts and labor.
  • Diagnostic testing related to covered warranty concerns is included.
  • Parts and labor not to exceed $750.00.
This Warranty Does Not Cover:
  • Damage resulting from abuse, neglect, accident.
  • Improper installation or maintenance, including failure to fill the unit with the correct fluid or maintain proper fluid levels.
  • Loss of time, inconvenience, loss of vehicle use, commercial loss, or consequential damages.
  • Failures caused by defects or inefficiencies in components or assemblies not supplied with the engine.
  • Damage, defects, injury, or loss resulting from misuse or negligence.
  • Installations performed by non-certified individuals.
Required for Approval:
  • Customers must contact our warranty department by phone within 2 weeks of an engine issue to be validated.
  • Receipts are required for reimbursement requests.
Warranty Process:

In the event of a part-related issue, please contact our warranty department for assistance with the claims process. A representative will guide you through the required steps. Warranty support can be reached at (888) 995-7278.

Warranty

Platinum 1-Year or 12,000-Mile Limited Warranty
Coverage Details:
  • A labor allowance is included with approved warranty claims. Labor reimbursement is provided at a rate of $35.00 per hour through the ALLDATA warranty system, with a maximum labor allowance of $400.00.
  • The warranty period begins on the date the product is delivered to the original purchaser and expires after one (1) year or twelve thousand (12,000) miles, whichever occurs first.
  • This limited warranty does not provide unconditional coverage for failures or hazards and is not transferable to any other individual or party.
  • For truck, bus, tractor, industrial, and marine applications, warranty coverage is limited to thirty (30) days from the invoice date or one thousand (1,000) miles, whichever occurs first. Product coverage only. No labor allowance applies.
Conditions Not Covered Under This Warranty:
  • Damage resulting from overheating, insufficient lubrication, or contamination.
  • Repair or replacement required due to accident, misuse, or improper operation.
  • Damage resulting from abuse of the engine for competition, racing, or related purposes, or for applications other than those for which the unit was originally designed.
  • Repair or service performed by any individual or facility without prior written approval, excluding routine consumer maintenance required under this warranty.
  • Damage caused by detonation or pre-ignition, as well as failures resulting from faulty electrical, computer, turbocharger, or fuel-related components.
  • Oil, antifreeze, filters, spark plugs, or other consumable maintenance items.
  • Diagnostic time related to issues not caused by components supplied with the engine.
  • CMS engines that have been modified by the customer, including but not limited to camshaft modifications.
Purchaser Obligations Required to Maintain Warranty Coverage:
  • The engine oil and filter must be changed within five hundred (500) miles of delivery and thereafter at intervals not exceeding three thousand (3,000) miles.
  • Receipts demonstrating compliance with maintenance requirements must be provided when submitting any warranty claim. Receipts must be printed and issued by a commercial business that performed the service.
  • The purchaser is responsible for monitoring motor oil and coolant levels, observing gauges and warning indicators, and ensuring proper engine operation.
  • For 1.9L and 2.0L Ford Escort and Focus applications, all debris or foreign material from prior engine failure must be removed from the intake and air box. A minimum charge of $300.00 will apply if engine damage occurs due to residual foreign material.
General Limitations:
  • Products believed to be defective must be removed from the vehicle and delivered out of the chassis at the purchaser’s expense.
  • Proof of compliance with all warranty requirements must be provided at the time a claim is submitted and must be issued by a commercial service provider.
  • Our obligation under this warranty is limited to repair of the covered product. We are not liable for incidental or consequential damages, including but not limited to towing, storage, vehicle rental, or damage to components not supplied as part of the engine or long block assembly.
  • No liability or responsibility is assumed for work performed on an engine or long block assembly by any person or facility unless prior written authorization has been provided.
Warranty Process:

In the event of a part-related issue, please contact our warranty department for assistance with the claims process. A representative will guide you through the required steps. Warranty support can be reached at (888) 995-7278.

Description

OEM REPLACEMENT

Our precision remanufactured 3.0 Liter GM long block Marine block

First, every 3.0L marine long block must pass our magnaflux inspection designed to detect any microscopic flaws or cracking. Blocks are then thermally cleaned, followed by steel microblasting until they achieve a brilliant appearance. Once a block is fully cleaned, we begin our precision boring and honing process. Using a carbon two-stage power hone, we can maximize the sealed area and ensure that it precisely meets the recommended RMA readings. Computerized micrometers are used to resize rods in strict accordance with factory recommendations. Crankshafts are precision cut and micropolished to achieve a 12 RMA reading or better.

Custom marine long block assembly

We meticulously mill each Cylinder Head until perfect alignment and sealing of the head gasket is achieved. Our Cylinder Heads are assembled using a new valve stem and seals that feature the latest in high temperature technologies increasing heat resistance and longevity. These polished Cylinder Heads are pressure tested using magnetic detection to eliminate the chance of cracks or flaws unseen by the human eye. Before each head is mated their block using the correct torque valve we vacuum test all seals for proper seating. Triple angled cutters are used to machine the valve seats ensuring proper pressures and flow. All valves, valve springs and valve guides must pass our stringent process of meeting and exceeding OEM specifications. O.H.C. Heads are aligned for proper bore consistency. Every remanufactured long block has been specifically engineered to help improve the inherent flaws and failure points that can be found in many of today's engines.

Cylinder head configuration, carbureted versus fuel injection

GM's design for the cylinder head allows it to be configured for either fuel injection or carbureted applications. Plugs are used by GM to close off the injector holes for carbureted applications. Most of our engines ship with the plugs in place for carb applications. If you need fuel injection, the plugs can be removed.

rebuilt engine

Additional information

Condition

Vehicle Year

, , , , , , , , , , , , , , , , , , , , , ,

Included With Marine Long Block

Testing

Compatible Models

Mercrusier, Volvo, OMC

Build Type

Cubic Inches

Liters

Warranty

Platinum 18 Month Unlimited Hours Warranty
Coverage Details:
  • This is a nationwide warranty valid throughout the continental United States.
  • No restocking or return shipping fees are charged on approved warranty claims. Restocking and shipping fees may apply only when a customer requests a return for a non-defective engine or when the return originates outside the continental United States.
  • The warranty period begins on the original date of purchase and remains valid for (18) months.
Parts and Labor Coverage:
  • Warranty reimbursement includes cost of replacement, engine, fluids, parts and labor.
  • Diagnostic testing related to covered warranty concerns is included.
  • Parts and labor not to exceed $750.00.
This Warranty Does Not Cover:
  • Damage resulting from abuse, neglect, accident.
  • Improper installation or maintenance, including failure to fill the unit with the correct fluid or maintain proper fluid levels.
  • Loss of time, inconvenience, loss of vehicle use, commercial loss, or consequential damages.
  • Failures caused by defects or inefficiencies in components or assemblies not supplied with the engine.
  • Damage, defects, injury, or loss resulting from misuse or negligence.
  • Installations performed by non-certified individuals.
Required for Approval:
  • Customers must contact our warranty department by phone within 2 weeks of an engine issue to be validated.
  • Receipts are required for reimbursement requests.
Warranty Process:

In the event of a part-related issue, please contact our warranty department for assistance with the claims process. A representative will guide you through the required steps. Warranty support can be reached at (888) 995-7278.

Warranty

Platinum 1-Year or 12,000-Mile Limited Warranty
Coverage Details:
  • A labor allowance is included with approved warranty claims. Labor reimbursement is provided at a rate of $35.00 per hour through the ALLDATA warranty system, with a maximum labor allowance of $400.00.
  • The warranty period begins on the date the product is delivered to the original purchaser and expires after one (1) year or twelve thousand (12,000) miles, whichever occurs first.
  • This limited warranty does not provide unconditional coverage for failures or hazards and is not transferable to any other individual or party.
  • For truck, bus, tractor, industrial, and marine applications, warranty coverage is limited to thirty (30) days from the invoice date or one thousand (1,000) miles, whichever occurs first. Product coverage only. No labor allowance applies.
Conditions Not Covered Under This Warranty:
  • Damage resulting from overheating, insufficient lubrication, or contamination.
  • Repair or replacement required due to accident, misuse, or improper operation.
  • Damage resulting from abuse of the engine for competition, racing, or related purposes, or for applications other than those for which the unit was originally designed.
  • Repair or service performed by any individual or facility without prior written approval, excluding routine consumer maintenance required under this warranty.
  • Damage caused by detonation or pre-ignition, as well as failures resulting from faulty electrical, computer, turbocharger, or fuel-related components.
  • Oil, antifreeze, filters, spark plugs, or other consumable maintenance items.
  • Diagnostic time related to issues not caused by components supplied with the engine.
  • CMS engines that have been modified by the customer, including but not limited to camshaft modifications.
Purchaser Obligations Required to Maintain Warranty Coverage:
  • The engine oil and filter must be changed within five hundred (500) miles of delivery and thereafter at intervals not exceeding three thousand (3,000) miles.
  • Receipts demonstrating compliance with maintenance requirements must be provided when submitting any warranty claim. Receipts must be printed and issued by a commercial business that performed the service.
  • The purchaser is responsible for monitoring motor oil and coolant levels, observing gauges and warning indicators, and ensuring proper engine operation.
  • For 1.9L and 2.0L Ford Escort and Focus applications, all debris or foreign material from prior engine failure must be removed from the intake and air box. A minimum charge of $300.00 will apply if engine damage occurs due to residual foreign material.
General Limitations:
  • Products believed to be defective must be removed from the vehicle and delivered out of the chassis at the purchaser’s expense.
  • Proof of compliance with all warranty requirements must be provided at the time a claim is submitted and must be issued by a commercial service provider.
  • Our obligation under this warranty is limited to repair of the covered product. We are not liable for incidental or consequential damages, including but not limited to towing, storage, vehicle rental, or damage to components not supplied as part of the engine or long block assembly.
  • No liability or responsibility is assumed for work performed on an engine or long block assembly by any person or facility unless prior written authorization has been provided.
Warranty Process:

In the event of a part-related issue, please contact our warranty department for assistance with the claims process. A representative will guide you through the required steps. Warranty support can be reached at (888) 995-7278.

Sales Dept: Open