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Underdrive Pulley - 3100/3400/2.8/3.1 V6

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Underdrive Pulley - 3100/3400/2.8/3.1 V6
Underdrive Pulley - 3100/3400/2.8/3.1 V6 Underdrive Pulley - 3100/3400/2.8/3.1 V6


Here they are, the new MRZ Performance 3100 - 3400 - 2.8 - 3.1 V6 Underdrive Pulleys! Smaller in diameter and lighter than the OEM GM pulley, this pulley will help free up some extra HP from your engine. This is the bang for the buck modification you can add to your engine and it's also easy to install in 30-45 minutes depending on your mechanical skills.

OEM WEIGHT and DIAMETER: 5 lbs - 6 inch

MRZ UDP WEIGHT and DIAMETER: 1.0 lbs - 5 inch

Now that is a radical drop on the rotational mass of your crankshaft meaning your engine will get to revs faster. The smaller diameter will also help since the accessories will be easier to spin for the engine.

Don't settle for all aluminum crank pulleys... they will cause oil leak with time due to the fact that the crank oil seal cuts a groove in the aluminum with time causing a leak, many people have experienced this problem with most other pulleys manufacturers. You don't want any oil leak on your car and we know it... we come with an answer to this problem, the Leak-Proof Technology, a simple and reliable way to solve this problem. An alloy steel ring is pressed exactly where the oil seal sits. This way you'll be able to enjoy your underdrive pulley for years to come with not oil dripping in your garage or at the race track.

All parts of the MRZ Performance UDP are CNC machined out of high strength 6061-T6 Billet aluminum and alloy steel to ensure the best performance and longevity of your engine.

You will need a shorter belt in order to install this pulley, get to your local part store and ask for a belt that is an inch shorter than your OEM belt number. There is too many belt routing and numbers for the V6 engine so it makes it impossible for us to predict exactly the belt you need.

This pulley will fit the engine with the crank sensor trigger wheel like the 3100 and 3400.

We can made special size (diameter and number of ribs) for supercharged applications upon request.

Satisfaction on these pulleys is guaranteed like on all MRZ Performance products.

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