Muffler Assembly for Cat 963 Track Loader, 45° Outlet – 1374097

Fits Models At A Glance:

Caterpillar Track Loaders:

• 963

Key Notes:

• Part Numbers: 1374097, 137-4097, 7C5060, 7N2321, 3607866
• Weight: 38.00 lbs (17.24 kg)
• Dimensions: 26.50 cm wide × 26.50 cm deep
• Engine: Fits machines with the Cat 3304T engine
• Style: 45-degree square-cut outlet; 4-bolt mounting flange
• Mating Clamp: Muffler clamp 1374499 (sold separately)
• Type: Exhaust muffler assembly
• Condition: Aftermarket replacement part
• Serial Number Notes: This muffler is for the 963 crawler loader. The 963-series used more than one muffler style over its run (see also 1004594 and 116-4178) — for a 963B, confirm the outlet style and serial number before ordering
• Application: Reduces engine noise and routes exhaust gases away from the machine on the 963 track loader

Common Use Case or Symptoms:
Use when the muffler is rusted through, leaking exhaust, excessively loud, or physically damaged — a failed muffler allows exhaust gases and noise to escape at the machine rather than being routed away safely.

Why Choose Broken Tractor:
✅ Correct 45-Degree Outlet Fit for the 963 — matched to the 3304T engine with a 4-bolt mounting flange
✅ Complete Muffler Assembly — ready to install, with clamp 1374499 available to finish the job
✅ Fast Shipping from a U.S.-Based Team — ready to ship from our U.S. warehouses