Michigan Motorsports LS4 Oil Pan Gasket | Like GM #12643081 | for 5.3L LS4 Front-Wheel Drive Engines | Fits 2005-2009 Impala SS, Monte Carlo SS, GXP, Lacrosse Super | Specifications and Fitment

Name: Michigan Motorsports LS4 Oil Pan Gasket | Like GM #12643081 | for 5.3L LS4 Front-Wheel Drive Engines | Fits 2005-2009 Impala SS, Monte Carlo SS, GXP, Lacrosse Super | Specifications and Fitment
SKU: B-B0FGYDK1RL
Price: 43.99 USD
Availability: InStock

$43.99

SKU: B-B0FGYDK1RL Category: Oil Pan Gasket Sets

Use the specifications, images, available variations, fitment notes, and referenced part numbers to check this product against your application.

About this item

Genuine OEM GM Part #12643081 – Manufactured by GM to exact factory specs for long-lasting durability, performance, and sealing reliability on 5.3L LS4 engines.
LS4-Specific Raised Deflector Tab – Features an integrated stamped oil control tab that ensures proper flow and deflection in LS4 front-wheel-drive oiling systems.
Engineered for 5.3L LS4 FWD Platforms – Designed to fit GM’s unique FWD LS4 block found in 2005–2009 Impala SS, Monte Carlo SS, Grand Prix GXP, and Buick Lacrosse Super.
Leak-Free Performance in OEM & Performance Builds – Provides an airtight seal during oil pan installation, even under demanding driving conditions or boosted setups.
Easy Direct-Fit Installation – No cutting or custom fitting needed; bolts up cleanly with your factory LS4 oil pan and hardware.

Before you order

Confirm the part number, position, dimensions, and connector details shown on this page.
Compare the listing with the part currently installed on your vehicle.

Description

Check the specifications, dimensions, variation details, referenced part numbers, and available fitment evidence before matching this item to an application.

Item model number
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MM12643081
Date First Available
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July 7, 2025
Manufacturer
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General Motors
ASIN
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B0FGYDK1RL
Country of Origin
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USA
Best Sellers Rank: #1,619,916 in Automotive (See Top 100 in Automotive)
- #933 in Automotive Replacement Oil Pan Gasket Sets

Seal your LS4-powered ride with confidence using the Genuine GM 12643081 Oil Pan Gasket—engineered for exact fitment and superior reliability. Designed specifically for the 5.3L LS4 front-wheel drive engine found in select 2005–2009 GM vehicles, this gasket is the go-to choice for factory-quality sealing during oil pan replacements, engine rebuilds, or leak prevention. Featuring a raised stamped oil deflector tab, this gasket is unique to the LS4’s FWD layout, offering proper internal oil channeling and sealing against high-pressure environments. Built to OEM specifications and backed by GM engineering, it’s an essential component for any serious LS4 build or maintenance job. Whether you’re freshening up a tired Impala SS or replacing a leaking pan on your Monte Carlo SS, this gasket ensures a leak-free install you can trust. No drilling, trimming, or RTV needed—just bolt it on and go.

Product facts

Specifications

Canonical product: MP-US-B0FGYDK1RL
Source product ID: B0FGYDK1RL
Category: Replacement Parts / Gaskets / Oil / Oil Pan Gasket Sets
Available images: 5

Vehicle information

Available fitment details

Listing compatibility notes

3L LS4 FWD Platforms – Designed to fit GM’s unique FWD LS4 block found in 2005–2009 Impala SS, Monte Carlo SS, Grand Prix GXP, and Buick Lacrosse Super.
Easy Direct-Fit Installation – No cutting or custom fitting needed; bolts up cleanly with your factory LS4 oil pan and hardware.

Fitment data is provided as a buying aid. Verify the listing against your vehicle and existing part before ordering.

Parameters, dimensions, material, fitment, and part numbers

Buying guidance

Quick decision

A oil pan gasket sets listing with source specifications kept visible for comparison.

Fit and size notes

3L LS4 FWD Platforms – Designed to fit GM’s unique FWD LS4 block found in 2005–2009 Impala SS, Monte Carlo SS, Grand Prix GXP, and Buick Lacrosse Super.
Easy Direct-Fit Installation – No cutting or custom fitting needed; bolts up cleanly with your factory LS4 oil pan and hardware.

Before you buy

Compare the listing title, photos, package contents, and specifications with the part being replaced.
Confirm vehicle compatibility and installation requirements before ordering.

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