MITSUBISHI FORKLIFTS:
• Mitsubishi FD30/FD35/FD40/FD45/FD50 S4S 3.3L Diesel (1995-2012)
CATERPILLAR FORKLIFTS:
• Caterpillar DP30N/DP35N/GP30N/GP35N S4S/3044C 3.3L Diesel (2000-2012)
IMPORTANT:
EXHAUST valve for Mitsubishi S4S engines (3.3L, 4-cylinder, direct injection). The Mitsubishi S4S is the same engine as the Caterpillar 3044C/T (and later C3.4) — Cat builds these under license from Mitsubishi. Cat 233-5470 is the SAME valve as Mitsubishi 32A04-21100. If ordering by Cat part number, the valve is identical. Requires 4 exhaust valves per engine. Do NOT confuse with intake valve 32A04-20100 (Cat 233-5469).
Fits Mitsubishi forklifts (FD30-FD50), Caterpillar forklifts (DP30N-GP35N), and any equipment using the S4S/3044C engine. When replacing, inspect valve guides for wear and valve seats for pitting or erosion. Replace valve stem seals. Exhaust valves see the highest thermal stress — check removed valves for heat cracking, face erosion, and tulip deformation. Adjust valve lash per service manual after reassembly.
⚠️ Exhaust only — for intake, order 32A04-20100 (Cat 233-5469).
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