Name: Recmar MerCruiser GM V6 V8 Thermostat Bypass Gasket 27-41812Q
Brand: RECAMBIOS
SKU: REC27-41812Q
Price: 1.28 GBP
Availability: InStock

Recmar MerCruiser GM V6 V8 Thermostat Bypass Gasket 27-41812Q

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£1.28

Tax included.

Recmar MerCruiser Thermostat Bypass Gasket

GM V6 / Small-Block V8 | 27-41812Q

Replacement bypass/upper thermostat-housing gasket used on selected MerCruiser GM V6 and small-block V8 cooling systems.

FITMENT CHECK: Match the gasket outline, passage openings and OEM suffix. 27-41812Q and 27-41812-2 are related-looking service gaskets but are not automatically interchangeable.

Key Features

Thermostat bypass/upper-housing gasket
For specified GM V6 and small-block V8 housings
Precision profile for listed reference
Aftermarket Recmar; not genuine Mercury
One gasket supplied

Technical Specs

Part type	Thermostat bypass gasket
Engine architecture	GM V6 / small-block V8
Installation	Specified thermostat housing interface
Quantity	1 gasket
4Boats SKU	REC27-41812Q

Compatibility / Fitment Guide

Engine / system	Application	Required check
MerCruiser GM V6	Selected 4.3L thermostat housings	Parts diagram must list 27-41812Q
MerCruiser GM small-block V8	Selected 5.0L / 305 and 5.7L / 350 housings	Confirm exact housing and cooling configuration
Service replacement	Matching removed gasket and passage layout	Verify suffix Q rather than -2

Not universal for all GM V6/V8 engines. Does not replace the thermostat-to-manifold gasket, O-ring or 27-41812-2 profile unless the serial-specific catalogue explicitly supersedes it.

OEM Cross Reference

Mercury / MerCruiser	27-41812Q; 27-41812
GLM profile family	31630 — verify exact suffix
Recmar / 4Boats SKU	REC27-41812Q

Cross-reference numbers identify the gasket profile and service application. This is an aftermarket Recmar component.

Questions & Answers

Will it fit every 5.7L?
No. Match the housing diagram and exact 27-41812Q reference.

Is this the manifold gasket?
No. It is the specified bypass/upper-housing gasket.

Is it the same as 27-41812-2?
Do not assume so; compare profile and serial-specific supersession.

How many are supplied?
One gasket.

Before ordering: match the removed gasket profile and 27-41812Q in the thermostat-housing diagram.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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Recmar MerCruiser GM V6 V8 Thermostat Bypass Gasket 27-41812Q