The Multiquip 8971334161 is a genuine OEM Cylinder Head Bolt DCA-45USJ 4JG1, designed specifically for the DCA-45USJ ultra-silent diesel generator series. Sourced directly from Multiquip, this bolt is manufactured to the exact torque and dimensional specifications required by the Isuzu 4JG1 engine used in the DCA-45USJ. Verified fitment means you can install with confidence, knowing this is the correct OEM component for your machine. DHS Equipment stocks genuine Multiquip parts so you can get your generator back online without guesswork.
Key Features
- OEM Thread and Torque Specification — Manufactured to the precise tensile grade and thread pitch required by the 4JG1 engine, ensuring correct clamping force across the cylinder head gasket.
- Direct Engine Application — Engineered specifically for the Isuzu 4JG1 engine fitted in the DCA-45USJ, dropping into the existing head bolt pattern without any reworking of the block or head.
- Confirmed Fitment for DCA-45USJ — Verified for the Multiquip DCA-45USJ ultra-silent diesel generator; cross-reference part number 8971334161 against your engine block before ordering.
- Critical Sealing Integrity — A correctly torqued cylinder head bolt maintains the compression seal between the head gasket and engine block; a worn, stretched, or incorrect bolt can lead to head gasket failure, compression loss, and coolant or oil intrusion into the combustion chamber.
- Engine Safety and Pressure Compliance — Cylinder head fasteners are a safety-critical component on any diesel engine; using the correct OEM bolt ensures the head assembly meets the designed clamping load under operating pressure and thermal cycling conditions.
A cylinder head bolt is one of the most structurally critical fasteners in a diesel engine. It clamps the cylinder head down against the head gasket and engine block, creating the airtight and fluid-tight seal needed to contain combustion pressure, coolant, and oil within their respective passages. On the Isuzu 4JG1 engine found in the DCA-45USJ generator, these bolts are torqued to a precise specification and in some cases are designed as torque-to-yield fasteners intended for single use. If a cylinder head bolt stretches, breaks, or is replaced with an incorrect grade, the result can be a blown head gasket, overheating, loss of power output, or internal engine contamination — all of which take a generator out of service entirely.
For help confirming this part fits your specific unit, contact the DHS Equipment team before placing your order.
Part Details
| Part Number | 8971334161 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Cylinder Head Bolt DCA-45USJ 4JG1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA-45USJ | DCA-45USJ |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
Multiquip