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Drain Plug Washer for Honda GX200/Clone Engines
138190004 Tillotson Drain Plug Washer
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Drain Plug Washer for Honda GX200/Clone Engines

Part Number: 138190004
Online Price: $0.99
Aluminum Drain Plug Washer – Honda GX200 & Clone Engines
Availability: In Stock.

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Description

Drain Plug Washer (Crush Washer) for Honda GX200 & Clone Engines


The 138190004 aluminum drain plug washer—commonly known as a crush washer—is designed to create a tight, leak-proof seal between the oil drain plug and the engine block. When the drain plug is tightened, the soft aluminum washer compresses to fill any surface imperfections, helping to prevent oil leaks during engine operation.


This washer is essential for proper oil sealing and should be replaced every time the drain plug is removed—especially if the washer appears deformed or worn.


Compatible With:

Fits most GX200-style small-block engines and clones, including:

  • Honda GX200 / Clone (196cc)
  • Box Stock Project 196
  • Tillotson 196 – 268cc
  • Ducar 196 / 212 / 224
  • Predator 212 (Hemi & Non-Hemi)
  • Predator 224 (Non-Hemi)
  • Wildcat 223 / 240
  • Ghost 212

Designed for use with Drain Plug Bolt part #138190005


Washer Specifications:

  • Material: Aluminum (soft crush-type)
  • Outer Diameter: 14.8mm (0.5835")
  • Inner Diameter: 10mm (0.400")
  • Thickness: 1.5mm (0.058")


Why Replace the Washer?

  • Prevents oil leaks by conforming to imperfections between the bolt and case
  • Helps maintain torque and vibration resistance
  • Avoids block damage from overtightening the plug without proper sealing


Summary:

This OEM-style aluminum crush washer is a small but vital component for maintaining proper oil system integrity in GX200-style engines. Ideal for builders, racers, and anyone doing regular oil changes on clone engine platforms.

FAQ

1. What is a crush washer used for?

A crush washer is a soft aluminum gasket that deforms slightly when tightened. It fills in small gaps between the drain plug and engine block, creating a secure, leak-free oil seal.


2. How often should I replace the drain plug washer?

It’s recommended to replace the washer every time you remove or reinstall the drain plug—especially if it shows signs of flattening or damage. Reusing old washers increases the risk of leaks.


3. Is this washer compatible with my Predator 212?

Yes. This washer fits both Hemi and Non-Hemi Predator 212 engines, along with most other GX200-style clones, including Tillotson, Ducar, and Wildcat platforms.


4. What size is the drain plug washer?

  • Outer Diameter: 14.8mm (0.5835")
  • Inner Diameter: 10mm (0.400")
  • Thickness: 1.5mm (0.058")


5. Can I use this washer with a generic M10 bolt?

This washer is designed specifically for M10-1.24 drain plugs (such as part #138190005). It may work with other M10 bolts, but we recommend verifying thread pitch and fitment to ensure proper sealing.

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