Volvo valve 21739130 plays a key opening-closing role in the engine valve train. Through precise coordination with valve seats, it controls the timing and flow of air-fuel mixture intake and exhaust gas discharge, with its sealing performance directly affecting engine power output, fuel efficiency and emission indicators, compatible with Volvo FH13, FM460, D13K series engines.
The valve is forged from high-strength alloy structural steel, with the head quenched to HRc45-50 hardness, and the stem chrome-plated with a thickness of ≥0.015mm, resistant to -30℃ to 650℃ temperatures, capable of withstanding continuous high-temperature gas impact and high-frequency reciprocating motion (over 2000 cycles per minute). The symmetry error of its head-valve seat contact surface is ≤0.02mm, ensuring tight sealing to avoid gas leakage, with a normal service life of over 15,000 hours.
As a professional supplier, Ningbo Qiuning Trading Co., Ltd. provides both original and aftermarket 21739130 valves. Original products strictly follow Volvo technical specifications, using imported steel and precision grinding processes, suitable for long-distance heavy-duty scenarios requiring extremely high valve timing accuracy; Aftermarket products pass 1000-hour durability tests, with key dimensions and sealing performance reaching over 90% of the original, priced at 55%-65% of the original, suitable for regular maintenance and budget-conscious customers, both with 12-month warranty.
During installation, check the valve guide clearance (recommended 0.05-0.08mm) to avoid abnormal noise or sealing failure due to improper installation. We have sufficient inventory, supporting global delivery within 48 hours, and our technical team can provide compatible model inquiry and installation clearance guidance. Welcome to consult and purchase according to actual needs:
WeChat/WhatsApp：+8615888032469
