Starter for Toyota Sienna (2004-2010) 3.3L 3.5L

High-Torque Replacement Starter for 2004-2010 Toyota Sienna (XL20)

What it Does: The replacement starter motor delivers high-torque cranking to reliably turn over the 2004-2010 Toyota Sienna engine in extreme operating temperatures.

The Stock Toyota Sienna Starter Wear and Solenoid Degradation

Factory starters on the Toyota Sienna frequently succumb to thermal cycling and mechanical fatigue. Positioned deep in the engine bay, the original Denso-style gear reduction unit suffers from copper contact erosion inside the solenoid, degraded commutator brushes, and excessive internal resistance over time. This wear manifests as intermittent single-click no-starts, sluggish cranking under low voltage, or high-draw binding that mimics an alternator failure. Furthermore, repeated engagement causes pinion gear wear and bendix clutch slippage, preventing clean meshing with the flywheel ring gear.

The Engineering Solution

This replacement unit incorporates heavy-duty copper solenoid contacts and a hardened carbon-steel pinion gear engineered to eliminate meshing wear. Utilizing an efficient planetary gear reduction design, the high-torque 12V motor maximizes cranking torque while reducing amp draw on the electrical system during cold starts. Balanced armatures and premium field coils resist thermal breakdown and eliminate heat soak failures. Every unit is pre-tested to guarantee seamless interface with factory mounting bosses and OEM electrical harnesses, matching factory part numbers 28100-0P010, 428000-1080, and 428000-1081.

What's Included

• 1 Starter Motor

Technical Specifications

Compatibility

• 2004-2006 Toyota Sienna 3.3L V6
• 2007-2010 Toyota Sienna 3.5L V6

Frequently Asked Questions & Fitment Warnings

Does this fit the XL20 Sienna?

Yes, this is a direct fit for the 2004-2010 Toyota Sienna equipped with the 3MZ-FE 3.3L or 2GR-FE 3.5L engine.

What should I check before replacing the starter motor?

Always verify battery state-of-charge and clean ground connections, as a weak battery or high terminal resistance can mimic starter solenoid failure.

The Toyota Reliability Standard

Built to withstand constant daily-driver duty cycles, this starter restores instant, dependable ignition performance to keep your family van operating at peak mechanical reliability.