Included in each 231C-A40 housing lot (unit) is a factory installed: air inlet bushing, throttle valve seat, throttle valve spring, trigger valve and trigger assembly. These new OEM housings fit both Ingersoll Rand models: 231C, 1/2" drive tools.
IINGERSOLL RAND 261-A40 HOUSING W/THROTTLE VALVE SYSTEM & WITHOUT REVERSE VALVE
Ingersoll-Rand Angle Housing Assembly LA1-A550S
Ingersoll Rand 2175MAX Housing Part #2175MAX-A40 2175MAXA40
INGERSOLL RAND 2145QiMAX-A40 COMPLETE HOUSING ASSEMBLY THIS WILL FIT 2145QiMAX
Ingersoll Rand 2130 1/2" Air Impact Wrench / Gun Housing
INGERSOLL RAND IMPACTOOL 436-A40 03063419 IMPACT WRENCH HOUSING