Muffler for Cat D6H, D6H XL/XR & D6R Dozers - 1125088

Fits Models At A Glance:

Caterpillar Dozers:

• D6H
• D6H XL
• D6H XR
• D6R

Key Notes:

• Part Numbers: 1125088, 112-5088, 7E3683, 7W4929
• Weight: 23.00 lbs (10.43 kg)
• Dimensions: 30.00 cm wide × 35.00 cm deep
• Engine: Fits machines with the Cat 3306 engine
• Type: Exhaust muffler assembly
• Serial Number Notes: Caterpillar lists one muffler across the D6H series and the D6R. Late-series D6R (Series II / III) can carry a serial-number break — confirm your machine serial before ordering
• Application: Reduces engine noise and routes exhaust gases away from the machine on the D6H, D6H XL, D6H XR, and D6R track-type tractors

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:
✅ Covers the D6H Series and D6R — one muffler assembly spans the D6H, D6H XL, D6H XR, and D6R on the 3306 engine
✅ Complete Bolt-In Muffler Assembly — ready to install, no fabrication needed
✅ Fast Shipping from a U.S.-Based Team — ready to ship from our U.S. warehouses