Colt Cam Stage 2 Billet PD Camshaft for VW Passat BHW

What It Is
A Stage 2 camshaft for the 2.0L BHW Pumpe Duse (PD) engine, machined from a solid forged steel billet rather than cast. Colt Cams engineered this specifically because PD engines put unique stress on the camshaft that a standard chilled cast cam, the kind that works fine on the ALH engine, isn't built to handle long-term. Kerma TDI is the exclusive US distributor for Colt's billet PD cams.

Why the Factory PD Cam Fails
Most customers who buy this cam aren't chasing horsepower, they're replacing a worn-out factory cam. The OEM PD camshaft has a well-documented pattern of premature lobe wear, driven by two design issues:

• A steep initial ramp angle that concentrates load right where the cam is weakest
• A hardened layer that's only skin deep, so once it wears through, wear accelerates fast

How Colt Solves It

• Machined from a forged steel billet instead of cast material, so the base metal is tougher before any hardening is applied
• Induction hardened to a depth several times greater than OEM or OEM-style replacement cams
• Lobe geometry re-optimized to reduce the load spike that causes the factory cam's early wear
• Comes with Kerma TDI's own cam installation additive, replacing the anti-scuffing additive most oil brands have since removed from their formulas

Warranty
A 5 year, unlimited mile warranty applies when this cam is purchased with one of Kerma TDI's installation kits, covering essentially the life of ownership for most drivers.

Installation Options

• Basic Install Kit
• Deluxe Install Kit, which bundles the BHW timing belt kit, valve cover gasket, 5L Liqui Moly diesel oil, and BHW filter pack

Fitment
2004-2005 Volkswagen Passat with the 2.0L BHW Pumpe Duse engine.

FAQ

Why can't I just use a regular chilled cast replacement cam?
Chilled cast cams work fine on the ALH engine, but PD engines like the BHW put enough extra stress on the cam lobes that a cast replacement tends to wear out the same way the factory one did. A forged billet cam is built to handle that stress.

Is this only for performance builds?
No. Most buyers come to this cam after their factory PD cam wore out, not because they were chasing more power. It's built to solve a reliability problem first.

Do I need the installation kit to get the warranty?
Yes. The 5 year, unlimited mile warranty applies when the cam is purchased alongside one of Kerma TDI's installation kits.

What's the difference between the Basic and Deluxe install kits?
The Deluxe kit adds the BHW timing belt kit, valve cover gasket, Liqui Moly oil, and BHW filter pack on top of what's in the Basic kit, covering the full job in one order.

Does this fit other PD engines besides the BHW?
This specific listing is for the BHW engine in the 2004-2005 Passat. Colt Cams makes separate billet cams for other PD codes like BEW and BRM.