At a Glance
- SKU: 33035U + 33040U
PRODUCT INFORMATION
Product Details
Trailer Disc Brake Caliper Service Kit
UFP DB42 Brake Caliper Piston Seal & Dust Boot Kit
Replacement piston seal and dust boot kit for servicing one compatible UFP DB42 trailer disc brake caliper.
Piston Seal: 33040 Dust Boot: 33035 Fits UFP DB42 Calipers Services One Caliper
Specifications
| Specification | Detail |
|---|---|
| Product Type | Caliper piston seal and dust boot kit |
| Caliper Application | UFP DB42 trailer disc brake caliper |
| Piston Seal Part Number | 33040 |
| Dust Boot Part Number | 33035 |
| Seal Inside Diameter | 1.901 inches |
| Service Quantity | Components for one caliper |
Fitment / Application
| Category | Details |
|---|---|
| Brake System | Hydraulic trailer disc brakes |
| Primary Fit | UFP DB42 brake calipers |
| Fitment Check | Confirm the DB42 caliper model and existing component measurements before ordering. |
| Important Note | This kit services one caliper. Order the required quantity for the number of calipers being repaired. |
R&P Knowledge Hub
Piston Seal: The piston seal maintains hydraulic pressure within the brake caliper while allowing the piston to operate correctly.
Dust Boot: The dust boot helps protect the caliper piston area from dirt, moisture, and road debris.
Replacement Considerations: Worn or damaged sealing components can contribute to brake fluid leakage, piston contamination, or restricted caliper operation.
Before Installation: Inspect the piston and caliper bore for corrosion, scoring, or other damage that may prevent proper sealing.
Features
DB42 Caliper Application
Designed for servicing compatible UFP DB42 trailer disc brake calipers.
Hydraulic Piston Seal
The included piston seal helps maintain hydraulic pressure within the caliper.
Piston Area Protection
The included dust boot helps protect the piston area from moisture, dirt, and road debris.
One-Caliper Service Kit
Includes one piston seal and one dust boot for servicing one compatible brake caliper.
Included Components
| Quantity | Component | Part Number |
|---|---|---|
| 1 | Piston Seal | 33040 |
| 1 | Dust Boot | 33035 |
Important: Verify that your brake caliper is a UFP DB42 model before ordering. The piston, caliper, brake pads, installation tools, brake fluid, and additional brake components are not included.
UFP DB42 brake caliper piston seal and dust boot kit, 33040 piston seal, 33035 dust boot, DB42 seal kit, UFP caliper seal, trailer disc brake caliper repair parts, hydraulic trailer brake seal, DB42 dust boot, UFP brake caliper service kit
Related Parts & Kits
Check fitment, measurements, and kit contents before ordering. Related parts may not be required for your repair.
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815-357-3292 · 270 E Jackson St · Seneca, IL 61360
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