***WARNING**** Do not fall victim to the failure of the OEM blue plastic drain plugs. The factory cheap plugs crack, break off and create service to nightmares to actual water leaks into your boat. Hardin Marine has designed the "Lifetime Series" drain plugs to perfectly blend with their award winning lifetime series sea pumps. Whether your replacing your sea pump or merely servicing your boat you cannot afford to not update to the simple to install safer drain plugs. these replacements for Mercruiser #22-806608A02 / 8M2000874 from Hardin Marine are polished Stainless Steel and will last a lifetime!

Mercruiser Heat Exchanger 4” x 25”, 7.4 Litre Front Mount Replaces Mercruiser OEM part #805136T

Make sure to verify this is the correct tank as we’ve found most people think they need the 18390T unit which is 4" x 22". However they normally have it confused with the 805136T.

Mercruiser Tandem Cooler. Power-Steering hose connectors directly in-line with water hose connector. Replaces Mercruiser OEM part #805561T Replacement Part For: 849952A02, 849952T01, 849952T.

Mercruiser Tandem Cooler. Power-Steering hose connectors directly in-line with water hose connector. Replaces Mercruiser OEM part #805561T1

MerCruiser Heat Exchanger fits the 270 diesel 7.3 litre. Replaces Mercruiser OEM part #806154A

Mercruiser Oil Cooler fits MCM 454 EFI , MCM 454 Mag Bravo. Replaces Mercruiser OEM part #806423T. 2" Diameter

Mercruiser Engine Oil Cooler fits MIE 7.4L. Replaces Mercruiser OEM part #806426T. Overall length is 8" and oil inlets are 1/2" inverted flare fittings.

Mercruiser Engine Oil Cooler 1/2" inverted flare 12 inches OAL 1.25" water. Replaces Mercruiser OEM part #806427T

Mercruiser Tandem Cooler fits MCM 7.4L Bravo. Replaces Mercruiser OEM part #806428T

Mercruiser Engine Oil Cooler has O.D. Hose fittings and in-line oil hose connections that fit MCM/MIE GM V-8 454/502 cid engines. Replaces Mercruiser OEM part #807371T. Measures 10" long overall, body length 7".

Mercruiser Engine Oil Cooler has O.D. hose fittings and off-set oil hose connections that fit MCM/MIE GM V-8 454/502 cid engines. Replaces Mercruiser OEM part #807371T1. Measures 10-1/2" overall, 7-1/2" main body. 2-1/8" diameter. 1-1/4" hose barbs. 1/2" inverted flare oil connections.