Air and Fuel Intake Manifolds and Components

Holley

REAR BLOCK PLUG KIT FORD GODZILLA ENGINE

$20.98

SKU: H00E 97-426

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Holley 97-426 is a rear block plug kit designed for the Ford 7.3L Godzilla engine. This kit includes a machined steel billet plug with an O-ring seal, mounting bracket, and retaining bolt to professionally block off the rear port.
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Part #: 97-426

Some engine swaps and racing applications do not need the heater, but it is tough to block off with the 7.3-liter Godzilla engine. The factory rear hose port is retained with a bolt (and the port is not tapped). This kit includes a zinc-plated steel plug with an o-ring seal retained by a bracket and bolt.

Features:

  • Elimination of the heater is difficult on the 7.3-liter Godzilla engine since the hose inlet and outlet passages are tough to plug & look cobbled up using traditional hoses, clamps, and plugs
  • Machined steel billet plug with o-ring seal, mounting bracket, and retaining bolt - blocks off the rear port
  • Works with 97-425 (front/heater block-off kit) to block all cooling ports
  • The plug is designed to handle high pressure & high temperature - typical conditions of the cooling system
  • Easy Installation without the need to tap holes or fabricate special plugs and caps
  • Steel plug features a clear zinc-plated finish
  • Ideal for use in engine swaps or racing applications that do not require a heater

Fits 2020 & Up Ford 7.3L Gasoline V8 Godzilla Engine

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHolley
Part NumberH00E 97-426
Weight0.29 lb

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Returns & Fitment

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.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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