Water Pump Backing Plate 97-16 Chevy LS

The Water Pump Backing Plate 97-16 Chevy LS is a critical internal engine component that serves as the structural foundation for your water pump assembly on fifth and sixth-generation Chevrolet LS-platform engines. This OEM-specification backing plate is engineered to support the water pump housing and maintain proper coolant flow dynamics across nearly two decades of LS engine evolution. Whether you're rebuilding a stock 5.3L, upgrading a 6.0L performance build, or restoring a classic truck with an LS swap, this backing plate ensures reliable cooling system integrity and prevents costly coolant leaks at the pump-to-block interface.

MAHLE ORIGINAL/CLEVITE manufactures this backing plate to exacting OEM tolerances, utilizing durable cast aluminum construction that resists thermal cycling and corrosion from extended coolant exposure. The plate's precision-machined mounting surfaces ensure flush contact with the engine block, eliminating micro-gaps that could allow seepage around the gasket interface. At just 0.02 lbs and measuring 4.35 x 0.3 x 8.3 inches, this compact component integrates seamlessly into the LS engine architecture without adding unnecessary weight while distributing pump load evenly across the block's cooling passages.

LS engine builders, performance mechanics, and truck enthusiasts routinely specify this backing plate during water pump replacement, engine overhauls, or full cooling system restoration. Compatibility spans 1997–2016 Chevrolet LS engines across trucks, SUVs, and performance vehicles—from stock daily drivers to heavily modified track builds. Installation is straightforward during water pump service; simply position the backing plate against the engine block before mounting the pump housing and torquing fasteners to specification. OEM-grade construction guarantees fit and finish that aftermarket alternatives often cannot match, making this the preferred choice for builders who refuse compromise on cooling system reliability.