OTTO C4.2-C15 Engine Assy for E312 Excavator – Premium Performance & Durability
High-precision
forged steel crankshaft
ensures maximum load-bearing capacity and extended service life under heavy-duty conditions.
Advanced CNC-machined aluminum alloy components
reduce weight while maintaining structural integrity, ideal for long-hour excavation and construction operations.
Multi-layer piston ring coating
minimizes friction and wear, enhancing fuel efficiency and power output for models like 3406, 3408, and S6K engines. Seamless compatibility with
Cat 3066, 3204, 3306, 3166 engines
, perfect for E312 excavators in mining, quarrying, and industrial earthmoving.
Factory-direct pricing
with bulk order discounts—global wholesale supply at unbeatable rates for fleet operators and machinery dealers.
Rigorous ISO-certified testing
guarantees OEM-standard performance, backed by a 12-month warranty for zero-defect reliability.