226025B320 Toyota FILTER SUB-ASSY, FUEL INJECTION PUMP, NO.2, Price: 15.29$, Weight: 0.001kg

Secondary Fuel Filter for Injection Pump ⛽

This small but critical micro filter sits at the inlet of the high-pressure pump on many Toyota diesel systems. It acts as a last-chance guard, catching ultra-fine particles and traces of water before they reach the plungers and the suction control valve. OEM-grade build, precise fit, and clean flow keep your common-rail system healthy.

Why you need it ️

Modern injectors work at extreme pressure and demand spotless fuel. This secondary stage supports the main under-hood filter, protecting the pump from wear, keeping rail pressure stable, improving cold starts, and extending injector life.

How it works ⚙️

Fuel passes through multi-layer micro-mesh and resin media with one-way flow. The fine screen traps rust, dust, algae residue, and micro shavings without starving the pump. Corrosion-resistant cage and tight sealing rings prevent bypass and internal leak-back.

If it fails ⚠️

Clogging or damage leads to hard starts, rough idle, low power, limp mode, and noisy pump. You may see rail pressure faults (e.g., low pressure), injector misfire, or stalling under load. Debris can scar pump plungers and tips, risking costly overhaul.

Tech notes

• Replace during pump service or after contamination events; flush lines and tank.
• Install with new O-rings, no sealants; observe flow direction arrow.
• Prime the system and bleed air after fitment.
• Use quality diesel; service interval ~60–80k km depending on fuel quality.
• Fits many Toyota D-4D/HD diesel applications; direct-fit replacement.