See us on:
Visit CP on Facebook Visit CP on Twitter Visit CP on YouTube
Is your boat in the gallery?
Image Gallery  
Instructions & Guides:
Instructions  
Find Parts by Mercury Model:
OEM Part Finder  
What's on sale today?
Sale Specials  
What are you looking for Today?

Need Help? Call Us:

1-800-225-9871

Outside the USA? Call 707-585-9871

Oil Coolers - Tube & Box Style Oil Coolers

Oil Cooler - 2" Diameter, 8" Length, 1-1/4" Hose Connection
Your Price:
$89.99

Oil Cooler - 2" Diameter, 9" Overall Length, 1-1/4" Hose Connection

620-100

Oil Cooler - 2" Diameter, 9" Overall Length, 1-1/4" Hose Connection

    Features:
  • 3/8" NPT oil connections
  • 1/8" NPT drain
  • Operating pressure of up to 150 PSI.
This cooler features thirty-one 1/4" cooling tubes with displacement baffles. Designed for power steering or transmission applications.

Oil Cooler - 2" Diameter, 8" Length, 3/4" NPT Connection
Your Price:
$109.99

Oil Cooler - 2" Diameter, 8" Length, 3/4" NPT Connection

620-125

Oil Cooler - 2" Diameter, 8" Length, 3/4" NPT Connection

This cooler features thirty-one 1/4" cooling tubes with displacement baffles.  It also has 3/8" NPT oil connections with an 1/8" NPT drain.  Operating pressure of up to 150 PSI.  Designed for powersteering or transmission applications.


Oil Cooler - 2" Diameter, 8" Length, 1" NPT Connection
Your Price:
$109.99

Oil Cooler - 2" Diameter, 8" Length, 1" NPT Connection

620-150

Oil Cooler - 2" Diameter, 8" Length, 1" NPT Connection

This cooler features thirty-one 1/4" cooling tubes with displacement baffles. It also has 3/8" NPT oil connections with an 1/8" NPT drain. Operating pressure of up to 150 PSI. Designed for power steering or transmission applications.


Oil Cooler - 2" Diameter, 16" Length, 1-1/4" Hose Connection
Your Price:
$109.99

Oil Cooler - 2" Diameter, 16" Overall Length, 1-1/4"Hose Connection

620-300

Oil Cooler - 2" Diameter, 16" Overall Length, 1-1/4" Hose Connection

Featuring thirty-one 1/4" cooling tubes with displacement baffles! Large 3/4" NPT oil connections for increased flow with an 1/8" NPT drain. Rated operating pressure up to 150 PSI. Recommended for engines up to 425 horsepower.


Oil Cooler - 2" Diameter, 16" Length, 3/4" NPT Connection
Your Price:
$129.99

Oil Cooler - 2" Diameter, 16" Overall Length, 3/4" NPT Connection

620-325

Oil Cooler - 2" Diameter, 16 Overall Length, 3/4" NPT Connection for Water and Oil

Featuring thirty-one 1/4" cooling tubes with displacement baffles! Large 3/4" NPT water and oil connections for increased flow with an 1/8" NPT drain. Rated operating pressure up to 150 PSI. Recommended for engines up to 425 horsepower.


Oil Cooler - 2" Diameter, 16" Length, 1" NPT Connection
Your Price:
$129.99

Oil Cooler - 2" Diameter, 16" Overall Length, 1" NPT Connection

620-350

Oil Cooler - 2" Diameter, 16" Overall Length, 1" NPT Connection

Featuring thirty-one 1/4" cooling tubes with displacement baffles! Large 3/4" NPT oil connections for increased flow with an 1/8" NPT drain. Rated operating pressure up to 150 PSI. Recommended for engines up to 425 horsepower.


Combination Engine Oil & Power Steering Or Transmission Cooler
Your Price:
$229.99

Combination Engine Oil & Power Steering Or Transmission Cooler

620-400

Combination Engine Oil & Power Steering Or Transmission Cooler, 2" Diameter, 19" Overall Length, 3/8" NPT P/S and 3/4" NPT Oil Connections, 1-1/4" Water Connection

All the same features as our other coolers except it is designed as a MerCruiser replacement cooler for the most common V8 engines. The only noticeable difference is the use of 3/4" NPT oil connections providing a higher volume flow capacity.

Note: Never use small than a 3/4" NPT oil connection on engine coolers.


Combination Engine Oil & Power Steering Or Transmission Cooler
Your Price:
$229.99

Combination Engine Oil & Power Steering Or Transmission Cooler

620-450

Combination Engine Oil & Power Steering Or Transmission Cooler, 2" Diameter, 18" Length, 3/8" NPT P/S and 3/4" NPT Oil Connections, 1" NPT Water Connection

All the same features as our other coolers except it is designed as aMerCruiser replacement cooler for the most common V8 engines.  The onlynoticeable difference is the use of 3/4" NPT oil connections providing ahigher volume flow capacity.

Note:  Never use small than a 3/4" NPT oil connection on enginecoolers.


Hi-Performance Engine Oil Cooler
Your Price:
$269.99

Hi-Performance Engine Oil Cooler

620-550

Hi-Performance Engine Oil Cooler, 3" Diameter, 16" Overall Length, 3/4" NPT Oil Connections, 1" NPT Water Connection

Designed for engines making 450 to 750 horsepower.  These units have seventy-six 1/4" seamless tubes - over double that of a 2" cooler.  The cooler incorporates cast end caps, NO cheap press-formed caps are used.  Operating pressure up to 150 PSI.  This is the cooler all others try to imitate but can never duplicate.  Compare features and you will demand Hardin Marine oil coolers.


Hi-Performance Engine Oil Cooler
Your Price:
$409.99

Hi-Performance Engine Oil Cooler

620-555

Hi-Performance Engine Oil Cooler
    Dimensions:
  • Overall Length: 20-1/2"
  • Tube Length: 16-1/2"
  • Diameter: 3"
  • Oil Connection: 3/4" NPT
  • Water Connection: 1" NPT
  • Drain: 5/8" NPT

High performance oil cooler designed for engines 450 to 750 horsepower. These units have seventy-six 1/4" seamless tubes and operate at 150 psi.


Hi-Performance Engine Oil Cooler
Your Price:
$399.99

HP Engine Oil Cooler 3" Diameter, 25" Overall Length, 1" NPT Connection

620-575

H/P Oil Cooler, 3/4" NPT Oil connections, 1" NPT Water Connections, 3" Diameter x 25" Overall Length.
    Dimensions:
  • Overall Length: 25"
  • Tube Length: 21"
  • Diameter: 3"
  • Oil Connection: 3/4" NPT
  • Water Connection: 1" NPT
  • Drain: 9/16" NPT

High performance oil cooler designed for engines making 550 HP to 1000 HP. These units have seventy-six 1/4" seamless tubes and operate at 150 psi.


Hi-Performance Combination Power Steering & Engine Oil Cooler, 3" Diameter, 25" Length, 3/4" NPT Oil Connections, 3/8" NPT Power Steering Connections, 1" NPT Water Connection
Your Price:
$419.99

Hi-Performance Combination Power Steering & Engine Oil Cooler

620-650

Hi-Performance Combination Power Steering & Engine Oil Cooler, 3" Diameter, 23" Overall Length, 3/4" NPT Oil Connections, 3/8" NPT Power Steering Connections, 1" NPT Water Connection

Have you made some performance modifications and you're now making mega horsepower only to find out your stock Mercury cooler can't keep up? Well not only is this our most popular combination cooler, it is also the answer to getting those oil temperatures back down where they belong. This cooler features seventy-six 1/4" seamless cooling tubes and can handle form 450 to 750 horsepower applications with ease. With a 23" overall length, 3/4" NPT oil connections, 3/8" NPT P/S connections, and 1" water connections, this is the perfect solution.


8 Plate Remote Oil Cooler Assembly
Your Price:
$459.99

8 Plate Remote Oil Cooler Assembly

625-8054

Multi-Plate Race Style Oil Cooler Assembly - 8 Plate Remote Oil Cooler Assembly

This multi-plate design oil cooler assembly is used in virtually every sever duty type of oil cooling environment found today. Recognized by Mercury Racing and every high profile professional engine builder as the most effective method to control oil temperature. The 8, 13 and 15 plate oil cooler design offers maximum heat dissipation in the most compact size and use of available space. This basically the same cooler package that's incorporated into a dual cooler style race bellhousing. Now you can have the same great cooling features in a remote mountable cooler. The cast aluminum housing features a hard anodized finish for corrosion resistance. Each housing has 1" NPT water inlets and outlets plus a dual-bolt mounting flange and will accept a 8,13 or 15 plate cooler assembly when used with the appropriate cover assembly.

Length 11-3/4", Height 5", and depth based on the 8 plate configuration is 4-3/8".


13 Plate Remote Cooler Assembly
Your Price:
$599.99

13 Plate Remote Cooler Assembly

625-8055

13 Plate Remote Cooler Assembly

This multi plate design oil cooler assembly is used in virtually every severe duty type of oil cooling environment found today. Recognized by Mercury Racing and every high profile professional engine builder as the most effective method to control oil temperature. The 8, 13, and plate oil cooler design offers maximum heat dissipation in the most compact size and use of space. This is basically the same cooler package that's incorporated into a dual cooler style of race bellhousing. Now you can have the same great cooling features in a remote mountable unit. The cast aluminum housing features a hard anodized finish for corrosion resistance. Each housing has 1" NPT water inlets/outlets and a dual bolt mounting flange and will accept a 8, or 13 plate cooler assembly when used with the appropriate cover assembly.

Length 11-3/4", Height 5", and depth based on the 13 plate configuration is 5-3/4".


15 Plate Stainless Steel Oil Cooler Kit (Port)
Your Price:
$995.99

Bravo Cooler Housing with 15 Plate Cooler Kit

625-8056

15 Plate Stainless Steel Oil Cooler with Billet Aluminum Mercury Style Cover for Bravo Applicaiton

These oil coolers, covers, and kits are required for use when a plate style oil cooler is used with a Hardin Marine or Mercury Racing flywheel housing. We offer multiple styles in both cast 356-T6 aluminum or 6061-T6 billet aluminum. Each cover is hard anodized for corrosion resistance.

Once again these kits are designed for your ordering convenience. Each kit consists of a single oil cooler, billet jam nuts, bolts and gaskets.


Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 14-3/4" Length

Your Price:
$625.00

Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 14-3/4" Length

260-OC401

Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 14-3/4" Length

This Olsen hi-performance engine oil cooler has a unique feature - it bolts directly to the engine block and requires no additional oil plumbing It merely sandwiches between the oil filter pad and oil filter It is available in either 1-1/4" push-on fittings or AN style fittings to plumb the water inlet and exit This cooler uses a large well designed 3" core and is available hard anodized or polished as an option An offshore model is available to clear mid-engine motor mounts This cooler completely disassembles for servicing.


Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 19-3/4" Length

Your Price:
$625.00

Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 19-3/4" Length

260-OC201

Big Block Chevy Gen 4 Bolt-On Cooler, 5" X 19-3/4" Length

This Olsen hi-performance engine oil cooler has a unique feature - it bolts directly to the engine block and requires no additional oil plumbing It merely sandwiches between the oil filter pad and oil filter It is available in either 1-1/4" push-on fittings or AN style fittings to plumb the water inlet and exit This cooler uses a large well designed 3" core and is available hard anodized or polished as an option An offshore model is available to clear mid-engine motor mounts This cooler completely disassembles for servicing.


Big Block Chevy Gen 5 Bolt-On Cooler, 5" X 19-3/4" Length

Your Price:
$625.00

Big Block Chevy Gen 5 Bolt-On Cooler, 5" X 19-3/4" Length

260-OC202

Big Block Chevy Gen 5 Bolt-On Cooler, 5" X 19-3/4" Length

This Olsen hi-performance engine oil cooler has a unique feature - it bolts directly to the engine block and requires no additional oil plumbing It merely sandwiches between the oil filter pad and oil filter It is available in either 1-1/4" push-on fittings or AN style fittings to plumb the water inlet and exit This cooler uses a large well designed 3" core and is available hard anodized or polished as an option An offshore model is available to clear mid-engine motor mounts This cooler completely disassembles for servicing.


Big Block Chevy Gen 5 Offshore Cooler,  5" x 14 3/4" Length

Your Price:
$625.00

Big Block Chevy Gen 5 Offshore Cooler, 5" x 14 3/4" Length

260-OC402

Big Block Chevy Gen 5 Offshore Cooler, 5" x 14 3/4" Length

This Olsen hi-performance engine oil cooler has a unique feature - it bolts directly to the engine block and requires no additional oil plumbing. It merely sandwiches between the oil filter pad and oil filter. It is available in either 1-1/4" push-on fittings or AN style fittings to plumb the water inlet and exit. This cooler uses a large well designed 3" core


Stringer Mount Remote Cooler, 5" X 14-3/4" Length

Your Price:
$625.00

Stringer Mount Remote Cooler, 5" X 14-3/4" Length

260-OC102

Stringer Mount Remote Cooler, 5" X 14-3/4" Length

Available in either 1-1/4" push-on fittings or AN style fittings to plumb the water inlet and exit This cooler uses a large well designed 3" core and is available hard anodized or polished as an option An offshore model is available to clear mid-engine motor mounts This cooler completely disassembles for servicing.