Ram Truck 1500, 2500 & 3500 (2006-2008)

5.7L (MDS) Engine


The 5.7L is equipped with 16 spark plugs. Two plugs are used for each cylinder. The 5.7L is also equipped with 8 separate and independent ignition coils. The one-piece coil bolts directly to the cylinder head cover and attaches to the spark plugs.

Two knock sensors (one for each cylinder bank) are used to help control spark knock.

The ignition system consists of:

16 Spark plugs (2 per cylinder)
8 Separate, ignition coils
2 Knock sensors
Powertrain Control Module (PCM)
Also to be considered part of the ignition system are certain inputs from the Crankshaft position, Camshaft position, Throttle position, and MAP Sensor.