278-5272 - Air Temperature Sensor

One New Aftermarket Replacement Air Temperature Sensor for Caterpillar (Cat) C4.4 / C6.6 Engines

This aftermarket replacement air temperature sensor (278-5272) monitors intake air temperature on Caterpillar C4.4 and C6.6 turbocharged Tier 3 diesel engines, providing the engine control module with critical data for fuel delivery and emissions management. Compatible with a wide range of Caterpillar construction and excavation equipment powered by these engine families.

Specifications

• Terminals: 2
• Length: 4.5 in.
• Height: 1 in.
• Engine Compatibility: Caterpillar C4.4T/TA, C6.6 Turbocharged Tier 3

Compatible Models

Caterpillar Excavators: 311B, 311C, 311D LRR, 311F LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 GC, 314C, 314D CR, 314D LCR, 315B, 315B L, 315C, 315D L, 317B L, 317B LN, 318B, 318B N, 318C, 318D L, 318D2, 318D2 L, 319C, 319D, 319D L, 319D LN, 320B, 320B L, 320B LU, 320B N, 320B U, 320C, 320C FM, 320C L, 320D, 320D FM, 320D L, 320D2, 320D2 FM, 321B, 321C, 321D LCR, 322B, 322B L, 322C, 322C FM, 323D, 323D L, 323D LN, 323D S, 323D SA, 323D2 L, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325B, 325B L, 325C, 325C FM, 325C L, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 326D2, 326D2 L, 328D LCR, 329D, 329D L, 329D LN, 330B, 330B L, 330C, 330C FM, 330C L, 330C LN, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 330D2, 330D2 L, 336D, 336D L, 336D LN, 336D2, 336D2 GC, 336D2 L, 336E HVG, 340D L, 340D2 L, 345B, 345B II, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349D2, 349D2 L, 349E L HVG

Caterpillar Dozers: D3K LGP, D3K XL, D4K LGP, D4K XL, D5K LGP, D5K XL

Caterpillar Asphalt Pavers: AP-300, AP-650B, AP-800D, BG-225C, BG-230D

Caterpillar Backhoe Loaders: 414E, 416, 416D, 416E, 416F, 416F2, 420, 420D, 420E, 420F, 420F2

Replaces Part Number(s):

278-5272, 2785272

New aftermarket replacement part - not remanufactured, not used.