138010E012 Toyota ARM SUB-ASSY, VALVE, Price: 30.76$, Weight: 0.13kg

Rocker Arm Sub-Assembly for Toyota Valve Train

This precision valve-train component keeps your engine breathing on time. It transfers camshaft motion to the valves, so the cylinders get the right air-fuel mix and exhaust outflow. Replace it to restore quiet operation, smooth idle, strong mid-range power, and good fuel economy. Perfect for owners who want OEM-level fit and durability without guesswork .

How it works ⚙️

The cam lobe pushes on the arm’s pad/roller. The arm pivots and presses the valve stem via lifter/adjuster, opening the valve exactly as designed. Its hardened contact surfaces and accurate geometry hold valve lift, duration, and timing. Internal oiling reduces friction and wear for long service life.

If it’s worn or broken

You may hear tapping, feel rough idle, misfires, or notice power loss and higher fuel use. Metal debris can appear in oil. Severe failure can keep a valve from opening or closing, risking burnt valves or piston contact. Replace promptly; inspect cam lobes, lash caps, and guides. Always oil the part before install and torque to spec.

Why choose this piece ✅

OEM-grade steel, heat-treated surfaces, stable clearance, and exact Toyota fitment. Low-friction contact reduces noise and helps keep emissions in check.

Compatibility

• Fortuner
• Hilux
• Innova