Bosch 0445120037 Common Rail Fuel Injector 3965750 for Cummins Engines

1. Product Overview

Brand new Bosch 0445120037 common rail fuel injector for Cummins engines. The manufacturer’s technical file for this injector states a Cummins application and the Cummins OE number 3965750 — that OE number rests on this single source and is marked accordingly below; the specific Cummins engine model is not confirmed by a second source, so no engine model is named here. The same technical file gives the universal number 0445120115 for this injector. Its control valve (F00RJ01941) and number range match the neighbouring Cummins injector 0445120029. Aggregated listings that advertise this number for other brands are keyword-stuffed titles and are not supported by any technical source. Please order by the number engraved on your old injector and we will verify the match free of charge.

2. Specifications

3. Fitment

Cummins engines (application stated in the manufacturer’s technical file; specific engine model not confirmed — confirm by the engraved number before ordering). 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

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.