Oil Bath Dust Caps 21 36 Replacement K71 148 00 For Dexter Axles And 10K Heavy Duty 12K 15K 4 Inch Thread Trailer Axle 4 Pack Beefy Plastic Screw On Cap Kit With O Rings And Rubber Plugs
✔️ 4-pack oil bath dust caps with 4.0 in thread, O-rings and plugs
These oil bath dust caps replace worn or missing caps on Dexter 9k-10k General Duty axles (1989-2009.7) and 10K HD/12K/15K models with a 4.0 inch thread. They’re typically used on trailer axles and other heavy-duty applications to seal the oil bath and keep dirt and moisture out, protecting the lubrication and bearings. Color: Clear.
| Dimension | Imperial | Metric |
|---|---|---|
| Outside diameter | 4 inches | 101.6 mm |
| Thread | 4"-12 (12 TPI) | 101.6 mm dia, 12 TPI |
| Depth | 1-1/2 inches | 38.1 mm |
✅ Fitment: Replacement for Dexter 9k-10K General Duty Axles (1989-2009.7), 10K HD 12K 15K with 4.0" thread
✅ Includes: 4 screw-on caps (021-036-00) with 4 O-rings (010-050-00) and 4 rubber plugs (046-032-00)
✅ Material: Durable high-hardness plastic with long service life
💡 What is an oil bath dust cap kit used for on trailer axles?
These caps help seal the oil bath, keeping lubricant in and contaminants out, which reduces wear and extends service life. Handy for maintenance and field repairs on heavy-duty axles.
- Keeps oil sealed and contaminants out - Quick screw-on installation with included O-rings and plugs - Compatible with Dexter 9k-10k General Duty and 10k/12k/15k axles with 4.0 inch threads