Sale

Heating and Cooling Water Pumps

Stewart Components

Stage 1 Mechanical Water Pump

$168.29 $151.46 Save $16.83

SKU: STEW13103

In Stock
In Stock
Ships by Aug 4
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Stewart Components Stage 1 water pump is a high-flow mechanical cooling solution designed to improve engine temperature management at lower RPMs. Each unit utilizes new original equipment cast iron housing that is machined and assembled by Stewart Components to meet precise standards. It is specifically compatible with Chevrolet Small Block engines found in 1971-1982 Corvettes. Technical features include a 5.795-inch total length, a 3/4-inch bearing, and a 3/4-inch shaft. Note that clearance may be a factor when used with certain aftermarket timing covers, such as double-roller timing sets, as the pump design varies from other aftermarket alternatives. Installation should be performed with attention to original equipment specifications to maintain cooling efficiency.

MIA's Description

The Stewart Components Stage 1 water pump is a mechanical high-flow pump for Chevrolet Small Block engines. Specifically designed for 1971-82 Corvettes, it features a 5.795-inch length, 3/4-inch bearing, and 3/4-inch shaft.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandStewart Components
Part NumberSTEW13103
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy