Yimi (Guangzhou) Automotive Parts Co, Ltd
| Stem-Guide Clearance | 0.04-0.07 mm |
| Payment Terms | T/T |
| Head Diameter | 46 mm |
| Material | Heat-Resistant Alloy Steel |
| Delivery Time | 5-8 Work Days |
| Packaging Details | Neutral Package or as customers’ request |
| Seat Width | 1.6-2.2 mm |
| Engine Compatibility | 4BD1 / 6BD1 / 4BG1 / 6BG1 / 4BC2 / 4BA1 / 4BB1 / 6BB1 |
| Supply Ability | 10000 pcs/month |
| Stem Diameter | 9 mm |
| Overall Length | 128 mm |
| Net Weight | 0.14 kg |
| Model Number | 4BD1 6BD1 |
| Certification | ISO/TS16949 |
| Brand Name | YIMI |
| Place of Origin | CHINA |
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Product Specification
| Stem-Guide Clearance | 0.04-0.07 mm | Payment Terms | T/T |
| Head Diameter | 46 mm | Material | Heat-Resistant Alloy Steel |
| Delivery Time | 5-8 Work Days | Packaging Details | Neutral Package or as customers’ request |
| Seat Width | 1.6-2.2 mm | Engine Compatibility | 4BD1 / 6BD1 / 4BG1 / 6BG1 / 4BC2 / 4BA1 / 4BB1 / 6BB1 |
| Supply Ability | 10000 pcs/month | Stem Diameter | 9 mm |
| Overall Length | 128 mm | Net Weight | 0.14 kg |
| Model Number | 4BD1 6BD1 | Certification | ISO/TS16949 |
| Brand Name | YIMI | Place of Origin | CHINA |
| High Light | 1-12551139-0 1125511390 OEM Intake Valve ，46 mm Head Diameter Intake Valve ，128 mm Overall Length Engine Inlet Valve | ||
The Intake Valve with OEM numbers 1-12551139-0 and 1125511390 is a verified direct-fit replacement for ISUZU FSR / FTR / NRR / NPR medium-duty trucks equipped with 4BD1 / 6BD1 / 4BG1 / 6BG1 / 4BC2 / 4BA1 / 4BB1 / 6BB1 diesel engines. This intake valve is a critical component of the cylinder head assembly, responsible for controlling the admission of air into the combustion chamber during the intake stroke.
The intake valve opens at a precise moment during the engine cycle to allow fresh air to enter the combustion chamber, then closes at the exact time to seal the chamber for compression and combustion. This precise timing is crucial for maintaining proper engine breathing, enhancing power production, and ensuring efficient combustion.
ISUZU genuine intake valves are manufactured from high-grade heat-resistant alloy steel to withstand combustion temperatures and continuous high-speed opening and closing cycles. The valve features a hardened stem tip and a precision-ground head manufactured to exacting dimensional tolerances.
The 4BD1 is a 3.9L inline-four direct-injection diesel engine and the 6BD1 is a 5.8L inline-six variant, both widely used in ISUZU FSR/FTR/NRR trucks from 1985 to 1999. The 4BG1 and 6BG1 are 4.3L and 6.5L engines respectively, used in ISUZU NPR/FSR trucks and Hitachi excavators.
Replace the intake valve when any of these symptoms appear:
| Verification Item | Data / Standard | Source / Method |
|---|---|---|
| Part Number (Short) | 1-12551139-0 | ISUZU OEM Parts Database |
| Part Number (Long) | 1125511390 | ISUZU OEM Parts Database |
| Alternate Format | 1-12551-139-0 / 1-125-511-39-0 | Autopart Masters; Aspect-Plus |
| Cross-Reference OEM | 1125511650 / 1-12551165-0 | IZUMI product listing |
| Cross-Reference OEM | 1125510500 / 1125510501 | Aspect-Plus |
| Cross-Reference OEM | 5125510060 / 5125510240 / 5125510250 | Aspect-Plus |
| Cross-Reference OEM | 5125510360 / 1125510830 / 1125511330 | Aspect-Plus |
| JCB Cross-Reference | 02/801529 | Aspect-Plus |
| Part Name | Engine Intake Valve (Inlet Valve) | ISUZU EPC |
| Vehicle Models | ISUZU FSR / FTR / NRR / NPR / Encava | NKR Diesel Parts; Isuzu Engine Kits |
| Engine Compatibility | 4BD1 / 6BD1 / 4BG1 / 6BG1 / 4BC2 / 4BA1 / 4BB1 / 6BB1 | Aspect-Plus |
| Head Diameter | 46 mm | Isuzu-truckspares (Indonesian) |
| Overall Length | 128 mm | Isuzu-truckspares (Japanese) |
| Stem Diameter | 9 mm | ProPartsDiesel |
| Material | Heat-Resistant Alloy Steel | 1D Auto Parts |
| Net Weight (per unit) | 0.14 kg | Autopart Masters |
| Certification | ISO/TS 16949 | Third-party system audit |
Primary ISUZU Applications:
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| ISUZU | FSR | FSR | 6BG1 / 6BD1 | 1987–1999 |
| ISUZU | FTR | FTR | 6BG1 / 6BD1 | 1990–1994 |
| ISUZU | NRR | NRR | 6BG1 / 6BD1 | 1988–1994 |
| ISUZU | NPR | NPR | 4BD1 / 4BG1 | 1985–1999 |
| ISUZU | Encava | — | 6BD1 | 1985–1999 |
Non-ISUZU Applications (Same Engine Platform):
| Brand | Model | Application |
|---|---|---|
| Hitachi | EX90 / EX100 / EX120 / EX150 / EX160 | Excavator |
| JCB | JS130 / JS200 / JS220 | Construction Equipment |
| Aichi | RZ150 / SR182 / SR210 | Aerial Work Platform |
| Denyo | DCA-6 / DCA-7 / DCA-100 / DCA-150 | Generator |
Mitsubishi Fuso Reference (Same Engine Platform):
| Brand | Model | Chassis | Engine | Years |
|---|---|---|---|---|
| Mitsubishi | Fuso Fighter | FM215 | 6D14 / 6D15 | 1976–1985 |
| Mitsubishi | Fuso Fighter | FM515 | 6D14 / 6D15 | 1984–1989 |
| Mitsubishi | Fuso Fighter | FK455 | 6D14 / 6D15 | 1986–1991 |
| Mitsubishi | Fuso Fighter | FK457 | 6D14 / 6D15 | 1989–1991 |
| Mitsubishi | Fuso Great | FU410NS | 6D40 | — |
| Mitsubishi | Fuso Fighter | FM657 | 6D16 | — |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd. Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
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