Water Pump Gasket Michigan Motorsports F4200-02 OEM for LS Engines

Description

Product Overview

The Michigan Motorsports water pump gasket (part number F4200-02) is engineered as a direct OEM replacement for General Motors part 12630223, delivering a seamless fit for a wide range of LS family engines. Constructed from a high‑temperature resistant composite, the gasket endures the extreme heat and pressure generated by modern performance engines while maintaining a reliable seal. Its dimensions match the original specification of 8.07 x 5.83 x 1.26 inches, and the lightweight design (0.704 ounces) ensures easy handling during installation. The gasket is compatible with Gen 3 and Gen 4 LS platforms, covering displacements from 4.8L to 7.0L, including LS1, LS2, LS3, LM7, LQ4, LQ9, LC9 and many other variants. By sealing the water pump to the engine block, the gasket prevents coolant loss, protects internal components from overheating, and supports the overall longevity of the cooling system. The package includes two identical gaskets, allowing technicians to replace both the driver‑side and passenger‑side seals in a single service interval, reducing labor time and minimizing the risk of future leaks.

Usage

This gasket is intended for both professional automotive repair shops and dedicated DIY enthusiasts who work on LS‑based vehicles. It excels in high‑performance street builds, race‑ready engines, and daily‑driver applications where reliable cooling is critical. During a water pump overhaul, the gasket is installed between the pump housing and the engine block, ensuring a leak‑free connection before the coolant system is refilled and the engine is run to operating temperature. The heat‑resistant material tolerates rapid temperature fluctuations, making it suitable for engines that experience frequent hot‑cold cycles, such as track cars or vehicles in extreme climates. Proper installation restores the cooling system’s efficiency, helping to avoid costly overheating damage and maintaining optimal engine performance.

Why Choose Us

Michigan Motorsports has a reputation for delivering precision‑engineered components that meet or exceed original equipment standards. Each gasket undergoes rigorous quality control testing, including dimensional verification, material stress analysis, and leak‑proof performance validation. The company sources only premium raw materials, guaranteeing durability under the most demanding conditions. In addition to the superior product, Michigan Motorsports provides responsive technical support, detailed installation instructions, and a straightforward warranty process that covers manufacturing defects. Customers benefit from a trusted brand that prioritizes engineering excellence, consistent fitment, and long‑term reliability, ensuring peace of mind with every purchase.

Key Features

• Exact OEM match – fits GM part 12630223 for a seamless replacement
• Heat‑resistant composite material – withstands high engine temperatures and pressure
• Dual‑gasket package – replaces both driver and passenger side seals in one service
• Broad LS compatibility – works with LS1, LS2, LS3, LM7, LQ4, LQ9, LC9 and more
• Dedicated customer support – technical assistance and warranty coverage for peace of mind

FAQ

What engines are compatible with this water pump gasket?

The gasket is designed for Gen 3 and Gen 4 LS engines, including LS1, LS2, LS3, LM7, LQ4, LQ9, LC9, and other LS variants ranging from 4.8L to 7.0L displacement.

Do I need to replace both gaskets at the same time?

While it is not mandatory, replacing both the driver‑side and passenger‑side gaskets during a water pump service ensures a uniform seal and reduces the chance of future leaks, providing the best long‑term reliability.

Is the gasket compatible with aftermarket water pumps?

Yes, the gasket is compatible with most aftermarket water pumps that use the same mounting dimensions as the OEM pump. However, always verify the pump’s mounting specifications before installation.

How does the heat‑resistant material improve performance?

The composite material retains its shape and sealing properties even under extreme temperature spikes, preventing deformation that could lead to coolant leakage. This stability helps maintain consistent engine cooling and protects internal components from overheating.

What warranty does Michigan Motorsports offer on this gasket?

Michigan Motorsports provides a limited warranty covering manufacturing defects for a period of one year from the date of purchase. Technical support is available to assist with installation questions and any warranty claims.