8D4771 O-Ring fit Caterpillar
8D4771 O-Ring fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
8D4771 O-Ring for Caterpillar Equipment
8D4771 is a standard O-ring seal used in Caterpillar articulated dump trucks and Caterpillar engine-machine applications. The seal is intended for axial or radial sealing applications where it helps prevent leakage and contamination at the joint.
This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
Fitment
The O-ring is listed for the following Caterpillar equipment and engine models:
- Caterpillar 735 articulated dump truck
- Caterpillar 740 articulated dump truck
- Caterpillar D350E articulated dump truck
- Caterpillar D400E articulated dump truck
- Caterpillar D400E II articulated dump truck
- Caterpillar 3116 engine
- Caterpillar 3126B engine
- Caterpillar 3176C engine
The listed applications cover Caterpillar articulated dump truck equipment and Caterpillar engine-machine assemblies. Confirm the machine model and the sealing location before installation, as the same equipment series may use seals with different dimensions in separate assemblies.
Cross-reference numbers
- 8D-4771
- 8D4771
8D4771 is the SKU format without a hyphen, while 8D-4771 is the corresponding hyphenated part-number format used for the same O-ring.
Specifications
| Part type | O-ring seal |
| Seal/O-ring type | Standard |
| Equipment manufacturer | Caterpillar |
| Primary applications | Articulated dump truck and engine-machine equipment |
| Material | Nitrile rubber (NBR) |
| Main seal material | Rubber |
| Material designation | NBR |
| Hardness | 75 Shore A |
| Cross-section diameter | 0.21 in |
| Inner diameter | 18.95 in |
| Outside diameter | 19.373 in |
| SAE AS568 dash size | -388 |
| Coating | None |
| Color | Black |
| Weight | 0.2 lb |
| Length | 15.24 cm |
| Width | 20.32 cm |
| Depth | 2.54 cm |
The seal uses NBR material and has a nominal hardness of 75 Shore A. Its specified dimensions are a 0.21-inch cross section, an 18.95-inch inner diameter, and a 19.373-inch outside diameter. The part has no listed coating and is supplied in black.
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