The RENNtech performance spark plug upgrade utilizes high quality NGK spark plugs in a cooler heat range than the OEM Bosch plugs. With the increased performance and boost pressure generated from performance tuning comes increased combustion temperatures. With OEM plugs, this additional cylinder pressure can cause pre-ignition and premature spark plug fouling. RENNtech performance spark plug package uses a "colder" heat range plug which allows spark plugs to fully ignite the mixture and allow the engine to maintain higher boost levels across an extended RPM range. This plug upgrade also improves idle quality and is the perfect replacement for vehicles experiencing spark plug or rough idle issues.Features:
- Comes with 8 spark plugs
- High quality NGK spark plug
- Mercedes-Benz, CLS550, C218, 2011-2013
RENNTECHs philosophy has always been to produce products without compromise, and that dedication continues to this day. True to Mercedes-Benz quality, RENNTECH cars are designed to be fast yet refined. Regardless of specification, they run faultlessly, idle smoothly, and have reliability and ease of maintenance comparable to the stock Mercedes-Benz. This attention to detail has made RENNTECH the choice of some of the most discriminating enthusiasts in the world.