8D1508 Spider & Bearing Assembly fit Caterpillar
8D1508 Spider & Bearing Assembly fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
8D1508 Spider & Bearing Assembly
8D1508 is a spider and bearing assembly for Caterpillar equipment. It is used in Caterpillar engines and Caterpillar wheel tractor-scrapers, including the equipment models listed below.
This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
Fitment
The assembly is specified for the following Caterpillar engine and machine applications:
- Caterpillar 3306 engine
- Caterpillar 3406 engine
- Caterpillar 3406B engine
- Caterpillar 3406C engine
- Caterpillar 3408 engine
- Caterpillar 3408C engine
- Caterpillar 3408E engine
- Caterpillar 3412 engine
- Caterpillar 3412E engine
- Caterpillar 621E wheel tractor-scraper
The listed fitment covers Caterpillar engine applications and the Caterpillar 621E wheel tractor-scraper. Compatibility should be checked against the equipment model and the part number installed on the machine before ordering.
Cross-reference numbers
| Equipment manufacturer part number | 8D1508 |
| Interchangeable part number | 7D9715 |
| Product SKU | 8D1508 |
The part number 8D1508 identifies the spider and bearing assembly. Number 7D9715 is listed as an interchangeable reference for this assembly.
Specifications
| Part type | Spider and bearing assembly |
| Application category | Universal joint spider |
| Equipment manufacturer | Caterpillar |
| Equipment types | Engine; wheel tractor-scraper |
| Assembly identification | 8D1508 |
| Weight | 0.7 lb |
| Length | 7.6 cm |
| Width | 2.2 cm |
| Depth | 7.7 cm |
The dimensional data refers to the supplied assembly: length 7.6 cm, width 2.2 cm, and depth 7.7 cm. The listed weight is 0.7 lb. No additional installation hardware, seals, or separate components are specified in the available product data.




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