CP4 Bypass Kit for VW TDI (CKRA & CVCA Engines) – Complete Protection Kit

Protect your Volkswagen TDI from costly CP4 high-pressure fuel pump failures with this complete bypass kit.

Each bypass block is CNC-machined in-house from 6061 aluminum for precision and durability. Every part is inspected and deburred before shipment to ensure top quality.

⸻

Kit Includes
• CNC-machined 6061 aluminum bypass block
• 10-micron fuel filter
• O-rings
• Tees, fittings and hardware
• Fuel hose
• Stainless steel clamps

⸻

Function & Benefits

The CP4 injection pump uses diesel fuel for internal lubrication, which is then sent upstream to the injectors.

If the pump fails, metal debris can spread throughout the entire fuel system—resulting in thousands of dollars in damage to injectors, lines, and the fuel tank.

This bypass kit separates the lubricating fuel from the high-pressure circuit, routing it through a dedicated filter and returning it safely to the fuel tank.

Meanwhile, the high-pressure side continues receiving fresh, clean, filtered fuel for optimal performance and protection.

✅ Helps prevent costly CP4-related failures
✅ Extends the life of your TDI fuel system
✅ Only the pump and return filter need replacement if a failure occurs
✅ Designed, machined, and inspected in the USA

⸻

Vehicle Compatibility

This kit fits Volkswagen models equipped with CKRA or CVCA 2.0L TDI engines.

CKRA Engine (2012–2014)
• 2012–2014 Passat TDI

CVCA Engine (2015)
• 2015 Passat TDI

⸻

Think of this as inexpensive insurance for your TDI.

In the event of a CP4 pump failure, this kit can save you thousands by preventing debris from contaminating your injectors and entire fuel system.