Performance Cylinder Heads 6.1 SRT8

Performance cylinder heads for 6.1 SRT8 engines

Mopar comparison numbers: 5170620AA, RL170620AA, 5170621AA, RL170621AA

Our ported cylinder heads for Chrysler, Dodge and Jeep 6.1 SRT8 are the ideal choice if you want to get the most out of your engine.
Thanks to precise machining and individual optimization of the intake and exhaust ports, our cylinder heads offer measurable and noticeable performance increases - whether on the race track or on the road.

Properties:

• Enlarged and flow-optimized intake and exhaust ducts: For maximum air flow and optimum mixture formation.
• Machined valve seats: Precise transitions for improved gas flow and high thermal resilience.
• New valves: High-quality and durable - perfectly matched to the overall system.
• New PSI 1511 valve springs: For the highest speeds and maximum spring force - ideal for performance-enhanced engines.
• New valve stem seals: Reliable protection against oil loss and gas breakthrough.
• New molybdenum valve spring retainers: Particularly light and extremely resilient - for lower inertia forces in the valve train.
• Completely ready to install: no additional assembly work - unpack, install, ride.

Advantages:

• More power and torque: noticeable increase across the entire speed range.
• Faster throttle response: Optimized airflow ensures more direct reactions.
• More efficient combustion: Better mixture swirling for more efficiency and power.
• Greater thermal stability: Longer service life even under full load.

Fits:

*The original cylinder heads are no longer available as new parts, but only "remanufactured".

Delivery includes:

• 2 cylinder heads