Product Overview
Protect your trailer wheel bearings with the 4 Pcs 21-36 Oil Bath Dust Caps for Dexter 9k-10K General Duty Axles 10K HD 12K 15K 4.0" Threads Trailer Axle Plastic Screw-on Cap Kit K71-148-00 from iFJF. These heavy-duty oil bath dust caps shield bearings from dirt, water, and road debris while allowing easy oil level inspection through the transparent window.
Made from durable, impact-resistant plastic that won't crack from road vibration or temperature changes. The precision threads ensure a secure seal that keeps lubricant in and contaminants out.
Frequently Asked Questions
Q: What axles are these compatible with?
A: Designed for Dexter 9K-10K general duty axles, 10K HD, 12K, and 15K trailer axles with 4.0" threads. Verify your axle specs before ordering.
Q: How do I install these?
A: Clean hub threads, apply light grease, hand-thread cap on, then tighten with strap wrench — do not overtighten.
Q: Are these oil bath or grease caps?
A: These are oil bath dust caps for oil-lubricated hubs. Features a semi-transparent window for checking oil level.
Q: How many come in a pack?
A: Pack of 4 — enough for a complete trailer axle (both hubs).
Q: Will these fit my trailer?
A: Check your axle manufacturer's hub thread diameter. These fit 4.0" threads specifically.
