The Midland Haldex 9111535400X is an SS318 series air compressor built for heavy-duty truck air brake systems. It features an 85mm bore and delivers 18.7 CFM of output. Port configuration includes a 3/8" NPT water port, 1/2" NPT discharge port, and 1/8"-27 NPT governor port. The unit uses an extended flange with an 11-tooth gear and thru-drive design, making it suitable for tandem or gear-driven accessory setups. Installation gaskets are included. The head assembly cross-reference is 9111539312X, and the OEM number is 303GB5129M. Call us to confirm proper fit for your application.
A refundable core charge of $294.00 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.
Features
Model SS318 heavy-duty air compressor
85mm bore with 18.7 CFM output rating
3/8" NPT water port, 1/2" NPT discharge port, 1/8"-27 NPT governor port
Extended flange with 11-tooth gear, thru-drive design
Head assembly: 9111539312X
Installation gaskets included
Tech Specs
- Model: SS318
- Bore Size: 85mm
- CFM: 18.7
- Water Port: 3/8" NPT
- Discharge Port: 1/2" NPT
- Governor Port: 1/8"-27 NPT
- Head Assembly: 9111539312X
- OEM Number: 303GB5129M
- Drive Configuration: Extended flange with 11-tooth gear, thru-drive
- Installation gaskets: Included
