Bosch 000 476 10 21 65 Fuel Injection Fuel Accumulator - 000 476 10 21 65

The Bosch 000 476 10 21 65 is an original equipment (OE-spec) fuel injection fuel accumulator designed to maintain consistent fuel pressure in the fuel line of compatible European vehicles. Installed in the fuel return line near the fuel tank, this accumulator plays a critical role in fuel system performance and reliability.

The fuel accumulator works by retaining residual fuel pressure after the engine is shut off, preventing fuel line evaporation and vapor lock. This helps eliminate hard-start conditions and ensures immediate fuel delivery on engine startup. A failed or worn accumulator can allow excess fuel to return to the tank too quickly, resulting in hard starts, acceleration lag, and loss of power.

Key Features:

• OE-spec direct replacement for original Bosch fuel accumulators
• Maintains consistent fuel line pressure during operation and after engine shutdown
• Prevents hard-start conditions caused by fuel pressure bleed-down
• Eliminates acceleration lag caused by insufficient fuel pressure
• Replaces previous Bosch fuel accumulator part number 0438170044
• Sold individually — one (1) per vehicle

Cross-Reference Part Numbers: 0438170055, 0004760921, 0004761021, 000476102164, A0004761021, W0133-1605209, 13033010101

Bosch is the world's largest supplier of automotive components, and all Bosch fuel system parts are manufactured to original equipment standards for reliable, long-lasting performance.