Exhaust muffler with an angled mounting base for AB engines. The design limits vibration and stress on joints to help prevent cracks and leaks. High-temperature steel and a corrosion-resistant finish provide reliable service life.
GX-AFTER provides vetted aftermarket parts focused on fit, durability and value — so your machine keeps working instead of waiting.
| Brand | Model / Series |
|---|---|
| JCB | 3CX, 4CX, 214, 215, 216, 217, 3DX, 4CN |
The list above is indicative. It is essential to verify that your machine is fitted with a Perkins engine.
1. Surface preparation
Clean mating faces; use the specified high-temperature gasket material.
2. Tightening sequence
Tighten in stages to the recommended torque to avoid base deformation.
3. Angle & clearance
Do not force alignment. Provide natural routing and vibration compensation.
4. Post-install check
Idle test for leaks/vibration; verify temperatures near the mounts.
5. Periodic inspection
Inspect welds, brackets and flex couplings every 250–500 hours.
Ensure natural alignment and do not force the base. Incorrect angle can crack welds or damage the pipe. Use high-temperature gaskets and flexible couplings per OEM guidance.
The muffler with angled base forms a key section of the exhaust path — it attenuates noise, routes gases and transfers loads to the frame.
Downtime is expensive — prevent it before it starts.
We dispatch the 123/03963 muffler quickly from stock. We’ll match gaskets and couplings to your serial number for a first-time fit. Our focus: availability, expert support and fast fulfilment.
📞 Not seeing the exact variant?
Only a portion of our catalogue is online — we stock 60,000+ parts. Call us and we’ll confirm fitment quickly and ship the same day when possible.
1. What alternative numbers exist for 123/03963?
Common variants: 12303963, 123-03963. OEM documentation often lists 123/03963.
2. Is it suitable for AB Turbo variants?
Yes — provided the exhaust geometry matches the factory layout.
3. Which dimensions should I verify?
Inlet ~58 mm, outlet ~58 mm; overall length ≈550 mm; body width ≈180 mm.
4. How do I recognise wear or failure?
Excess noise/vibration, cracked welds, corrosion, leaks around joints.
5. Do I need extra parts for installation?
We recommend fresh high-temperature gaskets and inspection of flexible couplings.
Need help confirming fitment? Call us — we’ll guide you to the right part.
Data sheet
Specific References
Manufacturer
Responsible person
See also similar products







Silencer turbo exhaust, angled base, suitable for JCB 3CX 4CX backhoe loaders.

















