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DEXTER

Oil Cap Gasket – For Fortress Bolt-On Cap – For 9K–12K Hubs | DXT
SKU: 912-GSKT-DXR
$4.00 USD $4.00 USD
Shipping calculated at checkout.
In stock
Description

This is a replacement oil cap gasket designed for Dexter Fortress-style bolt-on aluminum hub caps. It ensures a secure seal between the hub face and the cap, preventing leaks in oil bath systems. Ideal for maintenance, replacement, or restocking service parts.

Detailed Information:
Part Type Bolt-On Cap Gasket
Axle Rating 9,000–12,000 lbs
Compatibility Dexter Fortress Bolt-On Caps
Material Oil-Resistant Gasket Material
Fitting:

Designed to fit Dexter aluminum Fortress bolt-on hub caps (e.g., part #021-259-00). Intended for use on 9K–12K Dexter oil bath hubs. Simple replacement with bolt-on reassembly.

Features:
  • Leak Protection: Creates a secure seal between cap and hub face to prevent oil loss.
  • High Durability: Made from premium, oil-resistant gasket material for long-lasting performance.
  • OEM Compatibility: Matches Dexter factory specifications for Fortress bolt-on hub caps.
  • Service Part: Ideal for repairs, maintenance, or rebuilds without replacing the full cap assembly.
Interchangeable Part Numbers:
  • 010-500-00
Product Overview:

This Dexter bolt-on oil cap gasket is a critical component in maintaining a proper seal on 9K–12K oil bath hubs. Whether replacing a worn gasket or rebuilding a hub assembly, this part ensures long-term oil retention and system integrity for your trailer axle.

We want you to be completely satisfied with your purchase. That’s why we offer a hassle-free return policy within 30 days of delivery*. If your item is unused, in original packaging, and eligible for return, you can send it back for a refund or exchange.

*Some exclusions may apply

Some of our products are backed by a 1-year limited manufacturer warranty covering defects in materials and workmanship under normal use. If you experience any issues during this period, we’ll work with you to repair, replace, or resolve it according to warranty terms.*

*Proof of purchase required

Need it fast? We’ve got you covered. Orders confirmed before 3 PM Eastern Standard Time (Monday–Friday) are processed and shipped out the same business day. Orders placed after the cutoff will ship the next business day.
Oil Cap Gasket – For Fortress Bolt-On Cap – For 9K–12K Hubs | DXT

Customer Reviews

Based on 12 reviews
83%
(10)
17%
(2)
0%
(0)
0%
(0)
0%
(0)
C
Cyril Glendining
Exactly as Described – No Surprises

Packed well, arrived fast. Fit my 10K Dexter hub perfectly. For $4, this is a no-brainer for routine maintenance.

D
David Reynolds
Holds Up Under Vibration

After 800 miles of rough roads, still sealed tight. No signs of shifting or oil weepage. Material resists compression set.

R
Rafi Oneill
One Gasket Had a Tiny Nick

Arrived with a small edge tear—likely from packaging. Used a backup, but quality control could be tighter for such a critical seal.

L
Lesley Filson
Saved Me Time and Money

Didn’t have to replace the entire cap—just swapped the gasket. Cut my downtime in half. Exactly matches the factory spec.

A
Aleksandar Kozlov
Critical for Oil Bath Hubs

Running oil-filled hubs on a boat trailer. This gasket is essential for sealing. Glad Dexter offers it as a standalone part.

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