Camshaft Alignment Tool / Engine Timing Kit for Porsche 996 Turbo & GT2 / 997.1 Turbo & GT2 / 997.2 GT2 RS - Reduced to Clear (Minor Cosmetic Marks)  ❭  C4017U

Camshaft Alignment Tool for Porsche – Precision 4-Cam Timing Locking System

This camshaft alignment tool is designed specifically for the four-cam 3.6-litre engines used in the Porsche 996 Turbo, 996 GT2, 997.1 Turbo, 997.1 GT2, and 997.2 GT2 RS. Engineered for absolute accuracy, it ensures all four camshafts remain precisely locked in their timed positions during timing chain replacement, camshaft servicing, cylinder-head work, or complete engine rebuilds. 

Reduced to Clear: This item is offered at a reduced price due to cosmetic marks from storage and handling. Please review the photographs carefully, as they form part of the item description. 

Fits:
Porsche 996 Turbo 3.6L 2001-05 - M96/70 & M96/70E
Porsche 996 GT2 3.6L 2001-05 - M96/70S 

Porsche 997.1 Turbo 3.6L 2007-09 - M97/70 
Porsche 997.1 GT2 3.6L 2008-09 - M97/70S

Porsche 997.2 GT2 RS 3.6L 2011 - M97/70

NOTE: This tool is not compatible with the Porsche 997.2 Turbo. Although it uses a 3.6-litre engine, it is based on the DFI 9A1 engine family rather than the Mezger-derived M97 engine and therefore requires different timing tools. 

Optimised for Porsche’s high-performance Turbo and GT2 engines—where timing precision is critical—this tool set allows for clean, safe, and repeatable alignment, mirroring the function of specialist tools listed under 9661, 9661/1, and 9401.

Whether used in a professional Porsche workshop or by an advanced engine builder, this tool is essential for maintaining the performance, reliability and timing integrity of these legendary Mezger-based engines.

What This Camshaft Alignment Tool Does

This tool set enables:

• Precise positioning of all four camshafts on 3.6-litre Porsche turbo and GT2 engines
• Secure locking of cams during chain replacement and timing setup
• Accurate timing retention, preventing rotation or timing mismatch
• Correct alignment during cam phaser and chain tensioner servicing
• Professional-grade engine rebuilds with consistent timing accuracy
• Simplified installation via two specialised wrenches and pre-tensioner tools

Accurate camshaft timing ensures optimal engine performance, combustion efficiency, and long-term reliability.

Tool Set Components

• Two long camshaft wrenches (two thicknesses) for easy access and leverage
• Two cam chain pre-tensioner tools, ensuring chain tension during timing setup
• Locking fixtures for all four camshafts to maintain exact alignment

Designed for safe, efficient and repeatable timing chain replacement.

Compatible with engine types
M97/70S M97/70 M96/70S M96/70E

Why Timing Components Fail on Mezger-Based Porsche Engines

These high-performance engines are subjected to extreme loads, track usage, and high temperatures. Common failure points include:

• Timing chain stretch affecting cam synchronisation
• Worn cam chain guides causing slack and deviation
• Tensioner wear leading to startup rattles or timing drift
• Improper timing after previous repairs when incorrect tools were used
• Heat cycling, causing expansion and contraction of timing components
• Cam phaser wear, impacting valve timing accuracy

Symptoms often include: misfires, timing-related fault codes, loss of boost response, uneven idle, or unusual mechanical noise.

Why You Should Replace or Use This Camshaft Alignment Tool

A precision camshaft alignment tool ensures:

• Perfect synchronisation of all four camshafts Safely maintained timing during chain replacement
•  Protection from costly piston-to-valve interference
• Accurate VVT/cam phaser alignment
• Reduced risk of engine damage during rebuilds
• Professional-standard timing result
• Confidence when working on high-value Porsche Turbo and GT2 engines

This tool is essential for anyone servicing or rebuilding Mezger-engined 911 models.