CATERPILLAR BACKHOE LOADERS:
• Caterpillar 416B/416C/426B/428B 3054B 4.4L Diesel (1989-2001)
• Caterpillar 428C/436B/438B 3054B 4.4L Diesel (1989-2001)
CATERPILLAR EXCAVATORS:
• Caterpillar 317/317B/317N 3054B 4.4L Diesel (1995-2003)
CATERPILLAR TELEHANDLERS:
• Caterpillar TH62/TH63/TH82/TH83 3054B 4.4L Diesel (1997-2004)
IMPORTANT:
CYLINDER #1 high-pressure line for the Cat 3054B engine (Perkins 1004C). Each cylinder has unique bends — NOT interchangeable between positions. Line #2 (170-0581) is NOT available in this range — only #1, #3, and #4.
The 3054B is the EARLIER naturally aspirated version. Do NOT confuse with the later turbocharged 3054C (uses 232-2720 or 230-8995 series) or C4.4 ACERT common rail (322-3745 series). The 3054B typically has a Stanadyne or Bosch rotary injection pump. Verify your engine prefix to confirm 3054B vs 3054C.
Symptoms: fuel leak at fittings, diesel odor, single-cylinder misfire. A cracked line sprays fuel onto hot exhaust — replace immediately. Use flare-nut wrenches and bleed fuel system after install.
⚠️ Confirm 3054B engine (not 3054C or C4.4 ACERT).
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