✅ Compatibility

• Make: Caterpillar (CAT)
• Assembly Part Numbers: 190-8977, 1908977, CA1908977, 51G0054, 212-3657, 2123657, CA2123657
• Fuel Filter Cross References: 326-1644, 3261644, CA3261644, 1R-0770, 1R0770, CA1R0770
• Fits CAT Engines: 3126B, C-9/C9, C11, C13, C15, C18, C27, C32, 3176C, 3196, 3406/3406E, 3508B
• Fits CAT Equipment (by category):
  • Excavators: 322C/L/LN, 325C/L/LN/LCR, 330C/L/LN, 330D/L, M325C
  • Motor Graders: 120H, 12H, 135H, 16M, 24M
  • Wheel Loaders: 966G II, 966H, 972G II, 972H, 980G II, 980H, 990H
  • Track-Type Tractors (Bulldozers): D6R Series II, D8N, D8R, D8T
  • Wheel Dozers / Compactors: 814F, 815F, 816F, 824G II, 824H, 825G II, 825H, 826G II, 826H, 844H
  • Articulated / Off-Highway Trucks: 730, 770, 772, 777D
  • Wheel Scrapers: 627G, 637G
  • Forestry / Harvesters: 570B, 580B, TK711, TK721, TK722, TK732, TK741, TK751, TK752
  • Industrial Engines: C11, C13, C15, C32 industrial engines
• Note: Verify your machine serial number and existing assembly part number before ordering. Contact us with your machine serial for fitment confirmation.

🔧 Product Highlights

• Fuel Priming Pump + Water Separator — Complete Assembly: This is the complete 190-8977 assembly combining the fuel priming pump and water separator in one unit — the priming pump hand-primes the fuel system after filter changes, while the water separator removes water contamination from the fuel supply
• Direct OEM Replacement: Drop-in fit for CAT 3126B / C-9 / C11 / C13 / C15 / C18 / C27 / 3176C / 3196 / 3406 engines — matches original mounting, fuel line ports, and hand-pump specifications
• Extremely Broad CAT Equipment Coverage: One assembly covers 80+ CAT models across 9 equipment categories — excavators (322C–330D), motor graders (120H–24M), wheel loaders (966–990H), bulldozers (D6R–D8T), compactors (814F–826H), trucks (730/770/772/777D), scrapers (627G/637G), forestry machines, and industrial engines
• Restores Fuel System Priming & Water Separation: Corrects inability to hand-prime after filter changes, water contamination in fuel, fuel starvation, and hard starting caused by a failed priming pump or water separator assembly
• New Aftermarket Quality: Manufactured to CAT OEM specifications for reliable fuel priming and water separation in demanding construction and mining applications

📦 What's Included

• 1× Fuel Priming Pump & Water Separator Assembly (190-8977 / CA1908977) — New Aftermarket

🔑 Key Specs

• Primary Part Numbers: 190-8977, 1908977, CA1908977, 51G0054, 212-3657
• Fuel Filter Cross References: 326-1644, 1R-0770 (compatible filter elements)
• Assembly Type: Fuel Priming Pump + Water Separator Assembly
• Compatible Engines: CAT 3126B, C-9/C9, C11, C13, C15, C18, C27, C32, 3176C, 3196, 3406/3406E, 3508B
• Condition: New Aftermarket
• SKU: 190-8977

⚠️ Please verify your machine serial number and existing assembly part number before purchasing. If unsure of compatibility, contact us with your CAT machine serial number and we will confirm fitment.