Searching for a durable Isuzu 6BB1 crankshaft? Our forged steel replacement for 5.4L OHV engines (OEM 1-12310-405-0) features induction-hardened journals to ensure maximum fatigue resistance in heavy-duty truck fleets.
Product Categories:
Product Tags:
Send us a message
Looking for a reliable engine foundation? The Isuzu 6BB1 engine crankshaft (OEM: 1-12310-405-0) is a precision-forged component designed for 5.4L OHV diesel applications.
It addresses common journal wear and torsional vibration issues in Isuzu JCR, SBR trucks, and industrial generators, providing a stable platform for high-mileage operation.
Bulk wholesale stock available for immediate global shipping.
Ensure the long-term performance of your medium-duty commercial fleet with a high-strength replacement Isuzu 6BB1 Crankshaft. As the central component of the durable 5.4L inline-six diesel engine, this crankshaft is the definitive repair solution for engines experiencing high-mileage wear, bearing fatigue, or journal damage. An engine overhaul using this robust shaft restores the powertrain to its original standards of reliability and torque delivery.
This engine shaft is manufactured to reflect Isuzu’s commitment to “Commercial Vehicle Specialist” engineering. We use high-tensile forged steel to produce a crankshaft capable of withstanding the rigorous demands of commercial transport and industrial applications. It is the trusted choice for widely used Isuzu F-Series trucks (such as the FSR and JCR models) and various industrial machinery, providing fleet operators with a component that ensures sustained operational uptime.
| Technical Feature | Detailed Specification |
|---|---|
| Engine Series | Isuzu 6BB1 (5.4L 6-Cylinder Diesel) |
| OEM Part Number | 1-12310-405-0 / 8-94116-220-1 / 1-12310-405-1 |
| Engine Type | OHV (Overhead Valve), Naturally Aspirated |
| Casting Material | 42CrMo Forged Steel / Ductile Iron Options |
| Surface Treatment | Nitrided & Induction Hardened |
| Hardness Rating | HRC 55-62 |
Ruich Value is your global source for a comprehensive range of Isuzu diesel engine crankshafts. From the classic 6B series to modern heavy-duty engines, we supply the durable components required for effective engine rebuilding.
Category coverage: Isuzu 6BD1 & 6BG1 Series Cranks; 4BD1 Industrial Shafts; 6HH1 & 6HE1 Truck Crankshafts.
| Model | Model | Model | Model |
|---|---|---|---|
| 4HF1 | 4BG1 | 4ZD1 | 6BG1 |
| 4HG1T | 4FC1 | 4ZA1 | 6HE1 |
| 4HK1 | 4JA1 | 4ZB1 | 6HK1 |
| 4HE1T | 4JB1/4JB1T | 4BD1 | 6SD1 |
| 4BA1 | 4DA1 | 4JJ1 | 6WA1 |
| 4BC2 (DB33) | DH100 | G161 | 6WG1 |
| 4JG1 | C223 | 6BB1 (NEW) | 6HH1 |
| 4JG2 | C240 | 6BB1 (OLD) | 6QA1 |
| C190 | 600P | DB58 | 10PC1 |
| 4BB1A | 4ZE1 | 6BF1 | 10PB1 |
| 6BD1 | 10PE1 | 4BE1 | 12PD1 |
| 6SA1 | 10PD1 | 12PC1 |
Customized/billet crankshaft development based on drawings or samples is also possible.
Q1: What is the main cause of crankshaft failure in older 6BB1 engines?
A: Most failures in the 5.4L Isuzu 6BB1 stem from journal scoring due to high mileage and oil passage sludge buildup. Our crankshafts are precision-machined with micro-polished journals to ensure optimal oil film thickness and reduce friction.
Q2: Does this crankshaft fit Isuzu JCR and SBR truck models?
A: Yes, the Isuzu 6BB1 was a standard powerplant for JCR and SBR series trucks during the 1980s and 90s. This crankshaft (OEM 1-12310-405-0) is a direct drop-in replacement for those vehicle models.
Q3: What are the main bearing torque specs for the 6BB1 engine?
A: For the Isuzu 6BB1, main bearing cap bolts should be torqued to approximately 115-125 ft-lb (157-170 Nm). It is critical to follow the spiral pattern from the center out to avoid crankshaft binding.
Email: [email protected]
WhatsApp/Phone: +86 13889277673
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business
