PHR - Powerhouse Racing Billet Timing Back Plate With Cam Seal Retainers for 2JZ

The part no one notices. Until it's right.

Form meets function — finally give your timing system the finish it deserves. 

The factory 2JZ timing back plate was never designed to be seen. Thin stamped steel, awkward protrusions, and zero consideration for aesthetics make it one of the most overlooked eyesores in an otherwise beautifully built engine bay. 

The PHR Billet Timing Back Plate changes that completely. 

Machined from billet aluminum and engineered with both performance and presentation in mind, this back plate transforms your timing assembly into something worth showing off — without sacrificing critical functionality.

Purpose-Built Design — Not Just a Cover Replacement

This isn’t just a dress-up panel. Every feature has been carefully considered:

Removable Cam Seal Retainers

Integrated cam seal retainers provide added security while maintaining flexibility.

• Fully removable design to accommodate unknown variations in aftermarket cam gear geometry
• Compatible with OEM cam gears and all PHR cam gears
• Allows you to tailor fitment depending on your setup

Titanium Belt Retention Pin (Exhaust Side)

A precision-installed titanium pin helps prevent timing belt tooth jump at a critical location.

• Positioned at the exhaust cam gear entry point, just like OEM function
• Maintains belt stability under load
• Lightweight, corrosion-resistant titanium construction

Note:

The factory back plate uses a sheet metal protrusion near the intake cam for similar retention. This has been intentionally omitted to preserve a clean, symmetrical design.

In many racing applications, engines are run without any back plate at all, so users should weigh the benefits based on their specific goals.

Designed for Open Timing Setups

This back plate is built for engines that are meant to be seen — and serviced.

• No provisions for factory front timing cover mounting
• Ideal for:
  • Race applications
  • Show builds
  • High-end street builds

Why run it open?

• Show off premium components (especially billet cam gears)
• Faster inspection and service access
• Cleaner, more purposeful engine bay aesthetic

Engine Bay Presence — Elevated

Signature PHR Machining Finish

After anodizing, select surfaces are CNC-machined to reveal raw aluminum beneath.

• High-contrast black + machined finish
• Sharp, intentional edges
• Premium motorsport-inspired look

Precision Timing Marks

Clearly defined, CNC-machined timing marks make service straightforward.

• Easy visibility during timing belt installation
• No guesswork during engine assembly or maintenance

Practical Details That Matter

• Retains structure behind the timing system to prevent harness interference
• Eliminates the need to leave wiring unsupported if removing the factory plate
• Maintains a clean, controlled environment behind rotating components

Is This Right for Your Build?

This product is ideal for those who:

✔️ Want a clean, show-quality engine bay

✔️ Are running open timing components

✔️ Value precision machining and detail

✔️ Need flexibility with aftermarket cam gear setups

It may not be necessary if:

✖️ You plan to retain the factory front timing cover

✖️ You prefer a completely OEM-style configuration

The Bottom Line

The factory timing back plate was built to be hidden.
This one was built to be seen.