Caterpillar C9 Fuel Injector | Alliant Power AP63945 Remanufactured (Cat 10R-9001)
This is the Alliant Power AP63945, a fuel injector remanufactured by Alliant Power for the Caterpillar C9. It replaces Cat reman number 10R-9001 and the Cat injector numbers 20R-8070, 242-0616, 293-4065 and 328-2575. A refundable core applies.
The C9 used several injectors that look alike and do not interchange. Alliant Power AP63941 covers Cat 10R-4843 and AP63946 is a third C9 injector, so check the number. Cat sells them by engine serial number and arrangement number, so the number on your old injector decides which one you need. A miss, low power, hard starting or a cylinder cutout test that points at one hole are the usual reasons to change one.
Confirm Fitment Before You Order
Cat C9 injectors are matched by engine serial number and arrangement number, not by engine model alone. Alliant Power AP63941 covers Cat 10R-4843 and AP63946 is a third C9 injector, so check the number. Send us your engine serial number and the Cat number on your old injector before you order. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | AP63945 |
| Brand | Alliant Power |
| Condition | Remanufactured |
| Warranty | Alliant Power 24-month, unlimited-mileage warranty. |
| Type | Remanufactured fuel injector |
| Engine | Caterpillar C9 |
| Cat reman number | 10R-9001 |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 4 lb |
Fits / Applications
- Caterpillar C9 engines that use Cat injector 10R-9001
- Sold by Cat part number and engine serial number. Check the number on your old injector.
Part Numbers & Cross Reference
Alliant Power AP63945 · Caterpillar reman 10R-9001 · Caterpillar 20R-8070 · Caterpillar 242-0616 · Caterpillar 293-4065 · Caterpillar 328-2575
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
What Cat numbers does the AP63945 replace?
Cat reman 10R-9001 and Cat injector numbers 20R-8070, 242-0616, 293-4065 and 328-2575.
Will the AP63945 fit any Caterpillar C9?
No. The C9 used several injectors and they do not interchange. Alliant Power AP63941 covers Cat 10R-4843 and AP63946 is a third C9 injector, so check the number. Call 530-668-0818 with your engine serial number and the number on your old injector.
Is the AP63945 new or remanufactured?
It is remanufactured by Alliant Power. A refundable core applies, and it comes back when we receive your old injector.
Related Parts
- Caterpillar C9 Fuel Injector | Alliant Power AP63941 Remanufactured (Cat 10R-4843)
- Caterpillar 3126B HEUI Fuel Injector (Cat 0R-9348) | Alliant Power DT0R9348 Remanufactured
- Caterpillar 3126B HEUI Fuel Injector (Cat 0R-9350) | Alliant Power DT0R9350 Remanufactured
- Caterpillar C7 HEUI Fuel Injector | Delphi EX634762 Remanufactured (Cat 10R-4762)
- Caterpillar 3406 Injection Pump Rebuild Service
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.
Not sure the injectors are the problem? We test and diagnose in-house before you buy. See our common rail injector testing and rebuild service.
UPS Ground anywhere in the lower 48. A refundable core deposit is added at checkout and refunded in full when we receive your rebuildable core. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax and the refundable core charge are additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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