The Midland Haldex KNT85230X is an EL850 series air compressor built for turbocharged, air-cooled Cummins Type B engines. It replaces OEM part number NT7523 and mounts via a 2-hole flange with a tapered shaft. The compressor features a gear-drive, flange mount configuration with side oil feed, a front-threaded discharge, and base oil drain. The head is rotatable for installation flexibility, and a thru-drive option is available. Rated displacement is 8.5 CFM at 1250 RPM with a maximum turbo-charge pressure of 25 PSI. Bore diameter is 3.15 in., stroke is 1.50 in., and the external shaft length is 2.22 in. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your Cummins application.
Installation Instructions For Cummins B & C Series Thru-Drive Conversion - L31078.
Installation Instructions For Cummins B Series - L31105.
Service/Repair Instructions For Cylinder Head - L31059.
Service units are furnished without governors and manifolds and may require head rotation before installation or changeover.
Thru-drive units must not exceed 65 ft-lbs. of transmitted torque.
Thru-drive applications require the purchase of thru-drive kit SN3072BW.
Torque nut to 80-100 ft-lbs. (typical). Installation gaskets included.
A refundable core charge of $126.00 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
EL850 series, 2-hole flange mount with tapered shaft - replaces OEM NT7523
Rated 8.5 CFM at 1250 RPM, 25 max PSI turbo-charge pressure
Bore diameter 3.15 in., stroke 1.50 in., external shaft length 2.22 in.
Gear drive, side oil feed, front-threaded discharge, base oil drain
Rotatable head for installation flexibility; thru-drive configuration available
Intake manifold position: right; fits turbocharged, air-cooled Cummins Type B engines
Tech Specs
- Intake Manifold Position Right
- Application Cummins Type B Engines (Turbocharged, Air Cooled)
- OEM Part Number NT7523 Exact Replacement
- Core Group 850
- Overall Height 11.44 in.
- Overall Width 4.76 in.
- Overall Length 8.86 in.
- External Shaft Length 2.22 in.
- Bore Diameter 3.15 in.
- Stroke 1.50 in.
- Turbo-Charge Pressure 25 Max PSI
- Rated Displacement 8.5 CFM @ 1250 RPM
- Mount Type Flange Mount, Gear Drive
- Shaft Type Tapered
- Oil Feed Side
- Discharge Type Front-Threaded
- Oil Drain Base
- Thru-Drive Available
- Head Rotatable
Additional Information
Orientation viewed from front.Installation Instructions For Cummins B & C Series Thru-Drive Conversion - L31078.
Installation Instructions For Cummins B Series - L31105.
Service/Repair Instructions For Cylinder Head - L31059.
Service units are furnished without governors and manifolds and may require head rotation before installation or changeover.
Thru-drive units must not exceed 65 ft-lbs. of transmitted torque.
Thru-drive applications require the purchase of thru-drive kit SN3072BW.
Torque nut to 80-100 ft-lbs. (typical). Installation gaskets included.
