Electric Water Pump Block Adapters

Name: Electric Water Pump Block Adapters
Brand: EARL'S
SKU: 361-LS0025ERL
Price: 212.95 USD
Availability: InStock

^$212⁹⁵

Ships on 11/02/2026

Lowest Price Guarantee

Electric Water Pump Block Adapters

Fits Big Block Chevrolet Water Pump on GM LS Engine

(2) -12 AN Female O-Ring Ports

1/8 in. NPT Female Steam Tube Connection

6061 Billet Aluminum

Black Anodized

Pair

EARL'S / HOLLEY LS0025ERL Features:

These new billet block adapters allow the use of a big block Chevy electric water pump on the GM LS engine. These adapters feature (2) -12 AN O-ring female outlet ports for routing coolant back to the radiator. The 1/8" NPT port on the sides of the adapters allow a convenient hook-up for the steam tube outlet (eliminates modification of the radiator or water pump when installing the steam tube plumbing). This part includes the two block adapters, gaskets and mounting bolts.

Billet Aluminum Block Adapters for GM LS Engines
(2) -12 AN O-Ring Female Ports (Outlet on Each Side of the Block)
Black Anodized Finish
1/8” NPT Female Ports – For Easy Connection of Steam Tube Plumbing
Includes Gaskets & Mounting Hardware
Use AN Plumbing for the Coolant Return to the Radiator
Ideal for Use w/ Most Electric Water Pumps – for Big Block Chevy
Recommended for Use w/ the Following Water Pumps: Frostbite #’s (22-113, 22-114, 22-126, 22-133, 22-134), or Mr Gasket #’s (7022G, 7022BG)

Water Pump Adapters for GM Gen III/IV LS Engines

Earl’s LS coolant and steam tube plumbing components provide engine builders with versatile solutions for adapting modern cooling systems to GM LS engines. Designed to simplify custom plumbing, these precision-machined billet aluminum adapters support both remote-mounted electric water pump installations and the use of big block Chevy electric water pumps on LS platforms. Multiple AN hose connections allow clean, professional coolant routing, while integrated NPT steam ports provide proper steam tube management for LS cylinder heads. Built with durable black anodized billet construction and O-Ring sealing surfaces for leak-free performance, Earl’s cooling adapters deliver the strength, flexibility, and installation efficiency required for high-performance street, racing, and custom LS engine applications.

Part TypeWater Pump Adapter

Product LineEarl's GM Gen III/IV LS Electric Water Pump Adapters

BrandEARL'S

Package Height3.5

Package Width4.75

Package Length4.75

Weight2.07 PG

Part CategoryPerformance Parts

Water Pump Adapter Block Material6061 Aluminum

QuantitySold as a pair

Fitting Size 21/8 NPT

Fitting Attachment 2Female