Product Identification
- Product type: Air-brake compressor cylinder-head assembly
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WABCO reference:
9111549342 -
Cummins reference:
4089686 - Configuration: 75 mm, single-cylinder compressor head
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Approximate genuine-part dimensions: 215 × 215 × 126 mm - Approximate weight: 2.15 kg / 4.74 lb
The WABCO-style 9111549342 air compressor cylinder-head assembly is an aftermarket replacement designed for compatible 75 mm single-cylinder air-brake compressors. It cross-references with Cummins part number 4089686 and is intended to restore proper compressor operation when the original cylinder head is worn, leaking, cracked, damaged or no longer functioning correctly.
This compressor-head assembly helps control the intake and discharge of compressed air used by the vehicle’s pneumatic braking system. It is suitable for commercial-truck, bus, industrial and heavy-equipment applications equipped with a compatible WABCO-style compressor.
Key Features
- Aftermarket WABCO-style compressor-head assembly
- Replaces WABCO reference
9111549342 - Cross-references with Cummins
4089686 - Designed for compatible 75 mm single-cylinder air compressors
- Intended for commercial air-brake compressor systems
- Direct replacement when matched to the correct compressor application
- Helps repair air leaks, pressure loss and cylinder-head damage
- Current aftermarket listing includes mounting gaskets and bolts