✅ Compatibility

• Make: International Harvester
• OEM Part Number: 489944C91
• Compatible Engines: Nissan SD33 — Nissan SD33-T (turbocharged) — Diesel 633 — Diesel 633T
• Fits International Scout II: All 1976–1980 Scout II with SD33 or SD33-T Nissan diesel engine
• Fits International Terra & Traveler: All 1976–1980 Terra and Traveler with SD33 or SD33-T Nissan diesel engine

🔑 Key Specs

• International Part Number: 489944C91
• Type: Manual fuel hand primer pump (with gasket included)
• Engines: Nissan SD33 / SD33-T diesel — Diesel 633 / 633T
• Vehicles: International Scout II / Terra / Traveler (1976–1980)
• Condition: New Replacement — SKU: 489944C91

📦 What's Included

• 1× Fuel Hand Primer Pump (489944C91) — includes gasket

🔧 Product Highlights

• 489944C91 is the correct OEM-spec manual fuel primer pump with gasket for 1976–1980 International Scout II, Terra, and Traveler fitted with Nissan SD33 or SD33-T diesel engines — a hard-to-find replacement part for Scout II diesel restoration and maintenance.
• A failed or air-locked primer pump causes hard starts, fuel starvation, and no-start conditions on SD33-powered Scouts — replacement with the correct 489944C91 restores proper fuel system priming and reliable diesel starting.

⚠️ Verify your Scout II model year and engine type (SD33 vs SD33-T) before purchasing. Contact us if unsure — we are happy to confirm fitment.