PERKINS 4.108 ENGINES:
• Perkins 4.108/A4.108 4.108 1.76L Diesel 4-cyl (1958-1992)
MARINE ENGINES:
• Perkins 4.108M/4.108M-51HP 4.108 1.76L Diesel 4-cyl Marine (1960-1989)
MASSEY FERGUSON EQUIPMENT:
• Massey Ferguson MF 25/MF 30/MF 35/MF 100 4.108 1.76L Diesel 4-cyl (1963-1992)
• Massey Ferguson MF 122/MF 130/MF 825 4.108 1.76L Diesel 4-cyl (1963-1992)
IMPORTANT:
Oil pump for Perkins 4.108 (A4.108) — a tiny 1.76L 4-cylinder diesel. Unique among this catalog: this is a BELT-DRIVEN centrifugal rotor pump, not a gear-driven gerotor. Do NOT substitute gear-type pumps from larger Perkins engines.
The 4.108 is found in marine applications (4.108M, 4.108M-51HP), Massey Ferguson industrial (MF 25/30/35), and various small industrial equipment. Production spanned 1958-1992. Failure symptoms: low pressure at idle, oil leaking from belt-side seal, belt slippage causing intermittent pressure drops. When replacing, inspect drive belt condition and tensioner — a slipping belt mimics pump failure. Replace belt-side oil seal during installation.
⚠️ Belt-driven centrifugal pump — unique design. Verify 4.108 engine, not 4.154 or 4.203.
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