SHLPDFM Short Water Pump Pulley for Small Block Chevy SBC — Black 5/8 inch Double-Groove, Direct-Fit

SHLPDFM 5/8" double-groove short water pump pulley is a direct-fit black steel replacement designed for Small Block Chevy (Gen I) short water pump engines.

This pulley swaps in for worn or missing short-style water pump pulleys on a range of Small Block Chevy V8s, providing a sturdy, direct-replacement option that accepts a 5/8" pump shaft and two V-belts. Finished in black for corrosion resistance and visual integration with engine accessories, the pulley matches factory bolt patterns and dimensions so you can reinstall accessory belts without modification.

Will this pulley fit my SBC short water pump?

If your engine is a Small Block Chevy Gen I short water pump listed below, this pulley is engineered to fit. It uses a 5/8" water pump shaft, has four bolt holes and a 6.600" outside diameter, matching common OEM short-pulley specs.

• Compatible engines: 262, 265, 267, 283, 302, 305, 307, 327, 350, 400 (Small Block Chevy Gen I)
• Water pump shaft diameter: 5/8"
• Bolt pattern: 4 bolt holes for direct mounting
• Outside diameter: 6.600" to align with belt routing

How durable is the SHLPDFM steel pulley?

The pulley is stamped from high-strength steel and finished in black to resist rust and wear under typical engine bay conditions. Its construction prioritizes deformation resistance and long service life while keeping the part affordable.

• Material: high-strength black steel for impact and fatigue resistance
• Finish: black coating that helps limit surface corrosion
• Design: double V-groove for even belt seating and load distribution

Is installation difficult and what hardware is included?

Installation is straightforward for anyone familiar with small-block accessory work: the pulley bolts directly to the short water pump using the factory bolt pattern. This listing includes one short water pump pulley; use your existing pump bolts or OEM replacements as required.

• Included: 1 pc short water pump pulley
• Mounting: direct-replacement size and bolt pattern, no machining needed
• Tools: basic hand tools for removing old pulley and tightening four bolts

Will the double-groove design affect belt alignment or accessory performance?

The dual V-groove accommodates two V-belts and maintains proper alignment when matched to original accessory pulleys. It is sized to keep belt tension and routing consistent with factory setups on short-pump SBC engines.

• Grooves: 2 V-belt grooves for common accessory configurations
• Compatibility: intended to preserve OEM belt routing and tension
• Performance: designed to provide stable belt seating under normal driving loads

Who is this for: This SHLPDFM pulley is aimed at restorers, mechanics, and performance hobbyists working on Chevrolet Small Block Gen I short water pump engines who need a reliable, budget-friendly direct replacement. Choose this part if you require a 5/8" shaft pulley with a 4-bolt short-pump pattern and prefer a durable steel construction with a black finish for longevity and appearance.