Description
Genuine Detroit Diesel A0029974271 OEM air compressor coolant line fitting for DD13, DD15, and DD16 engines. The DD-series engine air compressor is water-cooled, and this fitting is the OEM coolant supply / return connection at the compressor body. Genuine Detroit Diesel part — same supplier and tolerance as the original factory installation; no aftermarket equivalent listed by Detroit.
Specifications
| Manufacturer | Detroit Diesel (Genuine OEM) |
|---|---|
| Part Number | A0029974271 |
| Part Type | Air Compressor Coolant Line Fitting |
| Engine Compatibility | Detroit DD13, DD15, DD16 |
Cross References
Detroit Diesel does not publish an aftermarket cross-reference for this OEM fitting. Order by the genuine Detroit part number:
- Detroit Diesel: A0029974271
Applications
This coolant line fitting is used on the air compressor coolant circuit on Detroit Diesel HD on-highway engines:
- Detroit DD13 (12.8L) — 2007–present, GHG14 / GHG17 emissions
- Detroit DD15 (14.8L) — 2007–present, GHG14 / GHG17 emissions
- Detroit DD16 (15.6L) — vocational and severe-duty applications
Representative vehicles using these engines include Freightliner Cascadia, Coronado, Columbia and 122SD, Western Star 4900 / 5700XE / 49X / 57X, and Mercedes-Benz Actros (in regions where Detroit-platform engines are sold under MBE branding).
Confirm engine model and the OEM coolant routing on your air compressor before ordering — older Detroit Series 60 air compressors use a different fitting and are not compatible.
