Multiquip 8944272012 Metal Camshaft DCA-45USJ 4JG1

The Multiquip 8944272012 is a genuine OEM Metal Camshaft DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. As a factory-sourced component, this camshaft is manufactured to the exact tolerances required by the Isuzu 4JG1 engine platform used in the DCA-45USJ series. Sourced directly through the Multiquip OEM parts network, 8944272012 is the correct replacement when the original camshaft shows wear, lobe damage, or loss of valve timing precision. DHS Equipment stocks genuine Multiquip parts to help you get your DCA-45USJ back to full rated output without guesswork.

Key Features

• OEM-Grade Metallurgy — Manufactured to the hardness and lobe-profile specifications of the original Isuzu 4JG1 camshaft, ensuring proper valve lift and duration are maintained.
• Direct Engine Replacement — Engineered as a drop-in fit for the 4JG1 engine block in the DCA-45USJ; mounts to the original bearing journals with no reworking of the engine case.
• Confirmed Fitment for DCA-45USJ — Verified for the Multiquip DCA-45USJ ultra-silent diesel generator series; order with confidence using part number 8944272012.
• Protects Valve Train Integrity — A worn or pitted camshaft causes uneven valve timing, rough idle, power loss, and excessive valve train noise; replacing with a correct OEM part restores smooth, consistent engine operation.
• Genuine Multiquip OEM Part — Supplied through the authorized Multiquip parts chain, so the part you receive matches the original specification used at the factory.

The camshaft is a precision-machined shaft inside the engine that controls the opening and closing of the intake and exhaust valves in time with the pistons. As the camshaft rotates, its lobes push against the valve train components to allow the correct amount of fuel-air mixture in and exhaust gases out at exactly the right moment. On a generator like the DCA-45USJ, accurate valve timing is critical to maintaining stable power output and fuel efficiency under load. When camshaft lobes wear down or develop surface damage, valve timing drifts, leading to hard starting, reduced power, increased fuel consumption, and potential valve or piston damage if left unaddressed.

For fitment questions or to confirm this part is the right part for your DCA-45USJ, contact the DHS Equipment parts team directly.

Part Details

Compatibility & Fitment

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.