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Trailer Parts Mart

21-88 – Oil Cap

21-88 – Oil Cap

SKU:21-88

Regular price $17.95 USD
Regular price $0.00 USD Sale price $17.95 USD
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Free shipping on orders $30+  ·  30-day easy returns  ·  Same-day dispatch before 7:30 PM

The 21-88 Screw-On Oil Cap is a high-quality replacement cap designed for Dexter 9,000 lb and 10,000 lb trailer axles manufactured after July 2009.Crafted from clear Lexan plastic, this cap allows for easy visual inspection of oil levels without the need for removal, ensuring optimal maintenance and performance of your trailer’s axle system.

Key Features

  • Clear Lexan Construction:Provides visibility to monitor oil levels effortlessly.

  • Threaded Design:Ensures a secure fit, preventing leaks and contamination.

  • Compatibility:Fits Dexter 9K–10K axles manufactured after July 2009.

  • Includes:Oil cap, rubber plug, and O-ring for a complete installation.

Specifications

  • Product Number:21-88

  • Outer Diameter:3.5 inches

  • Thread Size:3.5″-12

  • Material:Clear Lexan plastic

  • Installation Style:Screw-in

  • Compatibility:Dexter 9K–10K axles manufactured after July 2009

  • Works With: Oil Cap Plug and Oil Cap O-Ring (Sold Separately)

Shipping information

Orders under $30 have a $15 shipping charge. Orders of $30 or more ship free.

Returns

Eligible items can be returned within 30 days. Review the return policy before sending an item back.

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