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.

Part Number 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.

Frequently Asked Questions

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