1467C45013 Fuel Pump Overflow Valve – High‑Precision Relief Component For Bosch CP4 Common Rail Systems

While detailed OEM specs for the 1467C45013 aren't always published publicly, the part is recognized in parts catalogs as an authentic overflow valve engineered for Bosch high‑pressure fuel pumps. It's compact in form (typically around 0.025 kg) and precision‑manufactured to strict tolerances.

In diesel common‑rail applications, the overflow valve typically includes:

🌡 High‑grade stainless or alloy steel construction – built for thermal and mechanical resilience.

🔩 Tight sealing surfaces and spring‑loaded design – for responsive pressure relief.

💧 Corrosion‑resistant internal pathways – important in diesel environments where moisture or contamination can occur.

These design features ensure it meets the demands of Bosch CP4 high‑pressure fuel pumps used in modern diesel engines.

This overflow valve is specifically designed for Bosch CP4 common‑rail fuel pumps - a pump platform widely installed in:

Heavy trucks and commercial vehicles

Industrial generators

Agricultural machinery

Off‑highway construction equipment

Bosch CP4 pumps serve engines from manufacturers such as Ford, GM, Mercedes‑Benz, and other OEMs that demand high pressure, precise injection control, and reliability. The overflow valve ensures pressure regulation fits the exacting requirements of these systems - making it indispensable in any CP4 pump overhaul or rebuild.

Modern diesel fuel systems rely on stable pressure profiles to hit targets like emissions compliance, torque delivery, and fuel economy. In that context:

✔ Failure to regulate pressure leads to inconsistent injection – which reduces combustion efficiency.
✔ Pressure spikes can damage critical high‑pressure pumps – leading to costly repairs upstream.
✔ A well‑calibrated overflow valve contributes to smoother idle and throttle response.

In essence, maintaining optimal pressure isn't just about performance - it's about sustained reliability and longevity of the entire common‑rail architecture.