1W9171 Bonnet Fits Caterpillar Models

One New Aftermarket Replacement Discharge Valve Bonnet for Caterpillar (Cat) Engines and Equipment

This aftermarket replacement discharge valve bonnet (fuel injection pump bonnet) fits a wide range of Caterpillar (Cat) engines and equipment. The bonnet seals the discharge valve assembly in the fuel injection pump, helping maintain proper fuel delivery pressure to the engine cylinders. Replaces OEM part number 1W9171 (also referenced as 1W-9171).

Specifications

• Thread: M14
• Length: 4 in.
• Height: 1.2 in.
• Weight: approximately 0.15 - 0.2 lbs.
• Application: Fuel Injection Pump Discharge Valve

Compatible Models

Caterpillar Motor Graders: 120G, 12G, 12H, 12H ES, 12H NA, 130G, 140G, 140H, 140H ES, 140H NA, 143H, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H NA

Caterpillar Track-Type Tractors: D4E SR, D4H, D4H XL, D5E, D5H, D5H XL, D6D, D6E, D6E SR, D6G SR, D6G2 XL, D6H, D6H XL, D6H XR, D7G, D7H, D9R, D10N

Caterpillar Excavators / Hydraulic Excavators: 215, 235C, 330, 330 L, 330B L

Caterpillar Engines: 3204, 3304, 3304B, 3306, 3306B, 3408, 3408C

Caterpillar Wheel Loaders: 910, 916, 926, 926E, 930, 930R, 930T, 936, 936E, 936F, 950B, 950B/950E, 950E, 966C, 966D, 966E, 966F, 966F II, 970F, 988B, 988F, 990, 992C, 992D, 966G, 972G, G910, G916, G926, G936

Caterpillar Wheel-Type Skidders: 120C, 508, 515, 518, 518C, 525, 528, 528B, 530B, FB518

Caterpillar Track-Type Skidders: 120C, 125C, 4P, 517, 527, 54H, D4HTSK II, D4HTSK III, D5HTSK II

Caterpillar Wheel Tractor-Scrapers: 615, 615C, 615C II, 621E, 621S, 627B, 627E, 627F, 631D, 631E, 633D, 637D, 637E, 639D, 651E, 657E

Caterpillar Earthmoving Compactors: 815B, 816B, 836

Caterpillar Paving Compactors: CB-534, CP-643, CP-653, CS-643, CS-653

Caterpillar Cold Planers: PM-565, PR-1000, PR-1000C, PR-450, PR-450C, PR-750B

Caterpillar Wheel Dozers: 814B, 834B, 834S, 834U

Caterpillar Integrated Toolcarriers: IT12, IT18, IT18B, IT28, IT28B

Caterpillar Marine / Generator: 3304B, 3408, 3408B, SR4, WEG

Replaces Part Number(s):

1W9171, 1W-9171

Aftermarket Interchange Numbers

CA1W9171, M-1W9171

New aftermarket replacement part - not remanufactured, not used.