GLM

Center Bearings replaces MerCruiser part # 31-67445

1.375 Journal Size - 40C (1974-Thru), 45-60 HP 2-Cyl., (1971-Thru), 3-Cyl. All, V4 (1962-78)

Center Bearings replaces MerCruiser part # 31-88269T

2.1875 Journal Size - V4 Crossflow (1979-Thru), V6 Crossflow (1976-Thru) All V4-V6 60° Models

Check Ball replaces MerCruiser part # 30-98475

For R / MR / Alpha One (1983-1990)

Check Ball Kit replaces MerCruiser part # 30-98475T1

For R / MR / Alpha One (1983-1990)

Check Ball Screw replaces MerCruiser part # 10-17989

For R / MR / Alpha One (1983-1990)

Check Ball Spring (2 per pack) replaces MerCruiser part # 24-75533

For R / MR / Alpha One (1983-1990)

Check Valve Kit replaces MerCruiser part # 21-30430A1

Check Valve Kit replaces MerCruiser part # 21-30430A11

Check Valve Kit replaces MerCruiser part # 21-30430A12

Check Valve Kit replaces MerCruiser part # 21-30430A13

Check Valve Kit replaces MerCruiser part # 21-30430A3

Check Valve Kit replaces MerCruiser part # 21-30430A4

Check Valve Kit replaces MerCruiser part # 21-30430A8

Water Circulating Pump replaces MerCruiser part # 850399-1

Fits Both Metal and Composite Timing Chain Cover. Chevy V6 and V8 small block. 229 CID-3.8 LITRE, 262 CID-4.3 LITRE, 305 CID-5.0 LITRE, 350 CID-5.7 LITRE

Features Include:
• Machined Brass Impeller
• Bi-Directional & Balanced
• Stainless Steel Seal Cup & Spring
• Stainless Steel Backing Plate
• Epoxy Painted Pump Housing
• Stainless Banded Ceramic Seal Seat

Water Circulating Pump replaces MerCruiser part # 850454-1

Fits Both Tin and Aluminum Timing Chain Cover. Chevy V8 Big Block. 409 CID-6.6 LITRE, 427 CID-6.9 LITRE, 454 CID-7.4 LITRE, 502 CID-8.2 LITRE

Features Include:
• Machined Brass Impeller
• Bi-Directional & Balanced
• Stainless Steel Seal Cup & Spring
• Stainless Steel Backing Plate
• Epoxy Painted Pump Housing
• Stainless Banded Ceramic Seal Seat

Chrome Piston Ring (ø 3.375 +.030)

GLM’S EXCLUSIVE MARINE PISTONS
• Fully Machined Hypereutectic Pistons
• Featuring a Hard Anodizing Coating on Top
• Resisting Temperatures up to 1560°F
• Hardness: HV280-400
• Pistons are T-6 Heat Treated

Loopcharged: In 1976 Mercury / Mariner /Force introduced a V6 engine with loopcharged pistons. This engine was the V-175 HP 6-Cylinder. A loopcharged engine has a transfer port cast into the cylinder wall in such a way that it will direct the air / fuel mixture towards the combustion chamber and spark plug tip without the need for a piston deflector. All engines with a flat top or a slight dome on the top of the pistons will be loopcharged. Loopcharged engines will not have removable transfer port covers on the side of the cylinders.

Clamp (5 per pack) replaces MerCruiser part # 54-866507

Clutch & Cam Follower Kit replaces MerCruiser part # 52-803486T1

Includes:
• 700-11047 Spring
• 700-21106 Cross Pin
• 700-11066 Clutch Dog
• 700-11186 Cam Follower
• 700-11046 Spring