Bosch 0445120251 Common Rail Fuel Injector

1. Product Overview

Brand new Bosch 0445120251 common rail fuel injector, supplied by Wuhan Ranyingyi Trading Co., Ltd. (injector-factory.com). Market listings associate this number with Cummins ISB / QSB 6.7L engines and pair it with a Cummins OE number, but both points rest on market listings only — there is no catalogue-grade confirmation — so no OE number and no application is stated as fact here, and no nozzle, valve or exchange data could be retrieved for this number. Family warning: this number sits in the Cummins 526331x OE segment; listings routinely bundle 0251 / 0253 / 0254 / 0256 together, and bundled titles are not attribution evidence — in particular, 0251 and 0252 (whose OE ends one digit apart) must not borrow each other’s numbers. Always order by the number engraved on your old injector, and send us a photo of the engraving before ordering so we can verify the match free of charge.

2. Specifications

3. Fitment

To be confirmed — market listings associate this number with Cummins ISB / QSB 6.7L engines, but this is not catalogue-confirmed; contact us with the engraved number or VIN. Fitment data is for reference only — please confirm by the number engraved on your old injector or send us your VIN before ordering.

4. Cross-Reference

Note: the Cummins OE number 5263314 is paired with this Bosch number in two market listings, but with no catalogue-grade source behind it, it is NOT confirmed as this injector’s OE number — do not order against it without checking the engraving on your old injector.

5. After-Sales & Warranty

Professional installation by a qualified diesel technician is recommended. Every injector is covered by a 6-month warranty (3 months for wear parts). Defective or wrong items can be returned or exchanged within 15 days of receipt; return shipping is on the buyer unless the error is ours. Orders are processed within 1–2 business days with tracking, and refunds are issued within 7 business days after inspection. Full terms: see our Shipping & Returns page.

6. Why Choose Us

Factory-direct supply from Wuhan Ranyingyi Trading Co., Ltd. (injector-factory.com). Every injector is bench-tested before shipment, packed for export, and backed by fast, technical support on WhatsApp (+86 156 3802 2858) — send us your old injector’s engraved number or your VIN and we verify the exact match free of charge before you pay.

FAQ

Q1: How can I be sure this injector fits my engine?
A: Send us the number engraved on your old injector, or your VIN, on WhatsApp (+86 156 3802 2858). Our technicians will verify the exact compatibility free of charge before you order. Fitment data on this page is for reference only.

Q2: Does the price include shipping?
A: No. Our prices do not include shipping. Please contact us on WhatsApp (+86 156 3802 2858) for the latest price, and the freight will be confirmed with you on WhatsApp after you place the order, before anything is charged for delivery.

Q3: What warranty and returns do I get?
A: Core injectors carry a 6-month warranty (wear parts 3 months). Defective or wrong items can be returned or exchanged within 15 days of receipt; refunds are processed within 7 business days after inspection.