Moroso Small Block Chevy water pump gaskets Pack of 10 — cellulose pressure-conforming seals, thin profile for SBC pumps

These gaskets are manufactured from a pressure-conforming cellulose material formulated to compress and seal the joint between a Small Block Chevy (SBC) water pump—whether electric or conventional—and the engine block. Supplied in a 10-pack, they offer a cost-effective way to replace worn or damaged gaskets during rebuilds, routine maintenance, or pump swaps. The thin, formable construction helps accommodate minor surface imperfections while resisting common coolant exposure.

How do these gaskets improve sealing on a water pump installation?

The cellulose composition is engineered to compress evenly under bolt load, creating a consistent seal that reduces the risk of coolant leaks at the pump-to-block flange. They are thin enough to preserve factory clearances while filling small irregularities on mating surfaces.

• Pressure-conforming cellulose material for uniform compression
• Thin profile keeps pump alignment and clearances correct
• Compatible with both electric and conventional SBC water pumps

Which engines and pumps are these gaskets compatible with?

Moroso 93231 gaskets are sized for Small Block Chevy applications and are intended for typical SBC water pump bolt patterns. They work with aftermarket Moroso pumps as well as many original-equipment and replacement pumps that use the same mounting flange.

• Designed for Small Block Chevy (SBC) water pump flanges
• Fits Moroso electric water pumps and conventional mechanical pumps
• Useful for restoration, performance builds, and routine repairs

What installation tips ensure a leak-free fit?

Clean both the pump flange and engine block sealing surface to remove old gasket material, corrosion, and oil before installation. Hand-tighten bolts in a crisscross pattern to the manufacturer’s torque specification to achieve even compression of the cellulose gasket.

• Thoroughly clean mating surfaces before fitting
• Use the specified torque and sequence on pump bolts
• Replace gaskets any time the pump is removed for best results

How many should I keep on hand and when should I replace them?

A 10-pack gives ample spares for multiple maintenance cycles or for multiple vehicles. Replace gaskets whenever the pump is removed, whenever leaks are detected, or if a gasket shows compression set, deformation, or deterioration from age and coolant exposure.

• Pack of 10 supplies several service intervals or projects
• Replace with every pump service or when any leak appears
• Inspect for hardening, tearing, or crushed areas before reuse

Who is this for: Mechanics, restoration hobbyists, and performance builders working on Small Block Chevy engines who need an economical, ready-to-use sealing solution for water pump installations. The Moroso 93231 pack is suited to shops and home garages that perform multiple water pump changes or keep spare gaskets for preventative maintenance. It’s also a good choice for anyone swapping between electric and mechanical pumps who wants consistent, replaceable seals that conform to common SBC water pump surfaces.