Bosch 0445120391 Common Rail Fuel Injector for Weichai WP10

1. Product Overview

Brand new Bosch 0445120391 common rail fuel injector (type CRIN2-16, 1600 bar) for Weichai WP10 engines. The WP10 fitment is an established conclusion of our own multi-source cross-verification (October 2021 batch, which corrected an earlier wrong attribution published elsewhere on this site), and a market technical article likewise lists this number alongside 0445120224 as a WP10 / WP12-direction number. The manufacturer’s technical file confirms the system type but its application and OE tables are empty — so no OE number is published for this injector: candidate Weichai-format numbers circulating without per-number sourcing are deliberately not printed here, and the OE must be settled by the engraving on your old unit. Within the same WP10 / WP12 family, 0445120224 and 0445120227 are related but different numbers — the three are not interchangeable, so check the linked pages and order strictly by the engraved Bosch number. This injector is not for the Sinotruk MC11 application served by 0445120321. No Bosch exchange number, nozzle or control valve has been confirmed, so those fields are left blank.

2. Specifications

3. Fitment

Weichai WP10 engines (fitment established by multi-source cross-verification; the exact OE number for this injector is still to be confirmed by engraving). 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: no OE number, Bosch exchange number, nozzle or control valve could be confirmed for this injector, so none is listed. Three Bosch numbers serve the WP10 / WP12 family — the engraved Bosch number on your old injector decides which one you need.

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.