Caterpillar original Diesel Injector 0R-8682 Fuel Nozzle for 3126 Engine 924F Construction Machinery Excavator Loader Replacement 1136171 135-2581 original new injector

The Caterpillar 3116 Fuel Injector 0R-8682 is a mechanical high-pressure diesel injector engineered for direct injection systems used in CAT 3116, 3114, and 3126 mid-range industrial engines. Manufactured from hardened steel alloy with a corrosion-resistant coating, the unit operates at injection pressures of ≥1500 bar, delivering precision atomized spray through calibrated micro-holes for stable combustion across heavy industrial duty cycles. Each injector is validated for flow rate, sealing integrity, and spray pattern before shipment.

This assembly serves as a direct OEM-level replacement for Caterpillar injector seat geometry, with full cross-reference coverage including 127-8216, 127-8222, 107-7733, 127-8205, 127-8213, CA0R8682, CA1278216, CA1278205, CA1278213, 114-4508, and 196-1401. It fits loaders such as the 924F, backhoes including the 446B, excavators like the 320B, graders (120H), track tractors (D6M), pavers (AP-1055B), compactors (CP-563 / CS-573C), and industrial generator sets, making it a versatile solution for construction, mining, transport, and energy sectors across North America, Europe, Asia-Pacific, the Middle East, and Latin America.

Proper installation requires a new sealing washer, clean mounting bore, and hold-down clamp torque of 25–30 Nm per engine manual specification. For long-term reliability, operators should inspect spray quality every 500 hours and conduct full flow and pressure testing within 750–1000 hours, replacing fuel filters on schedule to maintain injection performance and service life.