Trailer Oil Bath Hub Cap / Center Plug
R&P Carriages 2-Pack Rubber Oil Cap Center Plugs Fits 7/8" Hole
Replacement rubber center plugs for compatible oil bath trailer hub caps using a 7/8" center opening. Fits Dexter-style applications using reference plug 046-032-00 and compatible cap references 21-35, 21-36, and 21-88 where measurements match.
R&P P/N: OC-Rubber Plug-LOTOF2 2-Pack Fits 7/8" Center Hole
Overview
This R&P Carriages oil cap center plug set includes two replacement rubber plugs for compatible oil bath hub caps. The plugs fit a 7/8" center hole and are used as a replacement-style solution for Dexter 046-032-00 plug applications where the cap model, center opening, and plug configuration match.
R&P Service Insight
Oil bath hub caps rely on the center plug to help retain oil and protect the hub cavity from road contamination. A worn, loose, cracked, or missing plug can create a leak path and should be addressed during hub service.
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Seal Point: Installs in the center opening of compatible oil bath caps.
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Service Access: Maintains a removable center plug location for hub oil inspection and service.
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Inspection Item: Replace plugs that are brittle, cracked, swollen, missing, or no longer seat firmly.
R&P Knowledge Hub
Compatibility: Designed for compatible oil bath hub caps using a 7/8" rubber center plug opening.
Vehicle / System Fit: Oil bath hub cap systems found on many trailer axle and hub applications where the listed cap references and measurements match.
Installation Notes: Verify the existing cap model and measure the center plug opening before ordering. The replacement plug should seat firmly without being loose or forced.
Performance Insight: A properly fitted rubber center plug helps retain oil inside the cap while reducing exposure to dust, water, and road debris.
Brand & Fitment Note
Selling Brand: R&P Carriages
R&P Inventory P/N: OC-Rubber Plug-LOTOF2
Application Reference: Dexter names and part numbers are used only to describe compatibility with listed oil cap applications.
What This Means: This listing is for an R&P Carriages 2-pack of replacement rubber oil cap center plugs, not a guaranteed OEM-branded Dexter item unless specifically stated and verified.
Before Ordering: Verify your oil cap model, center hole diameter, and existing plug style before installation.
R&P Repair Insight
If oil is seeping around the center plug, inspect both the plug and the oil cap opening. A damaged plug, hardened rubber, incorrect plug size, or damaged cap can prevent a proper seal.
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Hole Size Check: Confirm the cap uses a 7/8" center plug opening.
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Cap Reference Check: Common compatible cap references include 21-35, 21-36, and 21-88 where the center plug size matches.
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Fit Check: The plug should sit securely in the cap opening before the trailer is returned to service.
Features
2-Pack Replacement Set
Includes two rubber oil cap center plugs for replacement, service, or keeping a spare available.
Fits 7/8" Center Hole
Designed for compatible oil bath caps with a 7/8" center plug opening.
Dexter Reference Compatibility
Replacement-style plug for applications using Dexter reference part 046-032-00 where the cap and hole size match.
Common Oil Cap References
Compatible with oil cap references 21-35, 21-36, and 21-88 when the cap uses the matching 7/8" rubber center plug.
Specifications
| Specification | Detail |
| R&P Inventory P/N | OC-Rubber Plug-LOTOF2 |
| Selling Brand | R&P Carriages |
| Product Type | Oil cap center plug |
| Included Quantity | 2 plugs |
| Material | Rubber |
| Key Measurement | Fits 7/8" center hole |
| Dexter Reference P/N | 046-032-00 |
| Compatible Oil Cap References | 21-35, 21-36, 21-88 where center hole size matches |
Fitment / Application
| Category | Details |
| Vehicle / System | Trailer oil bath hub cap system |
| Primary Fit | Oil bath caps using a 7/8" rubber center plug opening |
| Reference Fit | Dexter 046-032-00 style plug applications |
| Notes | Verify cap model, center hole diameter, and existing plug style before ordering. Oil cap designs can vary by axle model and hub configuration. |
Included Components
| Quantity | Item |
| 2 | Replacement rubber oil cap center plugs |
| Not Included | Oil caps, O-rings, hubs, bearings, oil, and installation hardware |
Verify your oil bath cap model, center hole diameter, existing plug style, and included components before installation. Dexter names and part numbers in this listing describe compatibility reference only unless the product is specifically identified as OEM and verified.
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