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  • Davies Craig Holden 253-308 EWP Block Adapter – DC-8600 (Fits GM Engines)
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Davies Craig Holden 253-308 EWP Block Adapter – DC-8600 (Fits GM Engines)
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Davies Craig Holden 253-308 EWP Block Adapter – DC-8600 (Fits GM Engines)

CGO9358
In stock
$77.09 $76.09
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$76.09
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Davies Craig Holden 253-308 EWP Block Adapter – DC-8600 (Fits GM Engines)
Description

The Davies Craig Holden 253–308 EWP Block Adapter is designed to modernize cooling on classic GM Holden V8 engines. Built for 253, 304, 308, and 355 cubic inch engines, this adapter replaces the factory belt-driven mechanical water pump, allowing seamless integration of Davies Craig EWP® Electric Water Pump Combo Kits.

By eliminating the mechanical pump, you reduce parasitic power loss, improve cooling efficiency, and free up horsepower. This makes the Holden Block Adapter ideal for restorations, performance builds, and street machines running Holden V8s.


Features and Benefits

  • Direct Fit for Holden V8 Engines – Designed for 253, 304, 308, and 355 GM Holden blocks.

  • Replaces Mechanical Pump – Enables use of EWP® Electric Water Pump Combo Kits.

  • Improved Cooling Efficiency – Supports modern electric cooling upgrades for performance and reliability.

  • Optional Heater Return Adapter – Part #8380 required for heater hose return setups.

  • Flexible Heater Hose Solutions – Older vehicles with dual heater pipes may require 2 x Heater Return Adapters.

  • Durable Construction – Engineered for long-lasting performance in classic Holden builds.


Important Notes

  • For heater return hose setups, use the Heater Return Adapter (Part #8380) before the EWP®.

  • Vehicles with dual heater pipes require two Heater Return Adapters: one before the EWP® (return) and one after the EWP® (sender).


Technical Specifications

Specification Detail
Compatibility Holden V8 Engines (253, 304, 308, 355)
Application Replaces mechanical water pump with EWP®
Optional Part Heater Return Adapter (Part #8380)
Components Included Adapter Plate, Adapter Gasket


What’s Included

  • Adapter Plate x1

  • Adapter Gasket x1

  • Installation Instructions

REVIEWS

R.D.

Installed this adapter on my 308 Holden in Melbourne. Fitment was perfect and made the EWP upgrade straightforward. Cooling performance is way better now.

Rob D.

Melbourne, Victoria

★★★★★
S.M.

Used this block adapter on my 355 Holden build in Christchurch. Easy install, solid construction, and now I can run the Davies Craig EWP without issues. Highly recommend for Holden owners.

Steve M.

Christchurch, Canterbury

★★★★★
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