Description
Genuine Paccar K37-1032 cartridge fuel filter — a 7-micron depth-coalescer water separator for 2021 and newer Paccar PX-7 (6.7L) and PX-9 (8.9L) medium-duty engines. Depth coalescing media removes water and fine particulates ahead of the high-pressure common-rail fuel system in EPA21 medium-duty Kenworth and Peterbilt trucks.
Signs You Need a New Fuel Filter
- Hard starting or extended cranking
- Loss of power under load or during acceleration
- Water-in-fuel warning lamp
- Rough idle or surging
- Reduced fuel economy
- Rail-pressure or injector-circuit fault codes
Specifications
| Manufacturer | Paccar (Genuine OEM) |
|---|---|
| Part Number | K37-1032 |
| Part Type | Fuel Filter — Depth Coalescer / Water Separator |
| Engine Compatibility | Paccar PX-7 (6.7L), PX-9 (8.9L) |
| Media | Depth Coalescer |
| Micron Rating | 7 micron |
| Model Year | 2021 and Newer (EPA21+) |
| Style | Cartridge Element |
Cross References
This fuel filter replaces or is equivalent to the following part numbers:
- Paccar: K371032, K37-1032-403O
Applications
This fuel filter fits the following engines:
- Paccar PX-7 6.7L (2021+, EPA21)
- Paccar PX-9 8.9L (2021+, EPA21)
Representative vehicles using these engines:
- Peterbilt 535, 536, 537, 548 medium-duty (2022+)
- Kenworth T180, T280, T380, T480, T380V, T480V medium-duty (2022+)
This filter is specifically for EPA 2021 and newer PX-7 and PX-9 configurations. Verify your engine serial number and model year before ordering.
