Match the part number, measurements and connection points that apply to your trailer.
| Opening | Measure the existing roof or wall opening. |
|---|---|
| Flange | Confirm overall and flange dimensions. |
| Operation | Confirm powered, manual or fixed operation. |
| Mount / Power | Verify mounting and electrical requirements. |
Replacement piston seal and dust boot kit for servicing one compatible UFP DB42 trailer disc brake caliper.
| 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 |
| 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. |
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.
Designed for servicing compatible UFP DB42 trailer disc brake calipers.
The included piston seal helps maintain hydraulic pressure within the caliper.
The included dust boot helps protect the piston area from moisture, dirt, and road debris.
Includes one piston seal and one dust boot for servicing one compatible brake caliper.
| Quantity | Component | Part Number |
|---|---|---|
| 1 | Piston Seal | 33040 |
| 1 | Dust Boot | 33035 |
