What is an underdrive pulley?

An underdrive pulley spins your vehicle's accessories, like the alternator and water pump, at a slower speed than the engine's crankshaft. This reduces the load on the engine, freeing up a small amount of horsepower and potentially improving throttle response.

What is this pulley made of?

This ATI drive pulley is constructed from aluminum. Aluminum is lighter than the steel typically used for stock pulleys, which can contribute to a slight performance gain.

How many grooves does this pulley have?

This pulley has a 6-groove design, which is important for ensuring proper engagement with your vehicle's accessory drive belts.

FEATURED BRAND = COVERKING CHECK OUT COVERKING NOW →

Questions? Call Us:631-982-0042

M-F 8AM-4PM ET

Trusted Since 1957

Est. 1957

Specifications

Brand: ATI
Part #: ATI916237
UPC: 800157053931

ATI Pulley - Drive - 5.43 - 6 Grv - Alum - Dodge 3.7 4.7 V6 25 Percent UD

Name: ATI Pulley - Drive - 5.43 - 6 Grv - Alum - Dodge 3.7 4.7 V6 25 Percent UD
Brand: ATI
SKU: ati-ati-pulley-drive-5-43-6-grv-alum-dodge-3-7-4-7-v6-25-percent-ud-t14-360757
Price: 112.60 USD
Availability: BackOrder

$112.60

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ATI 916237 underdrive crank pulley for Dodge 3.7L and 4.7L V6 engines. Improves accessory drive efficiency.

Key Features

ATI 916237 underdrive crank pulley for Dodge 3.7L and 4.7L V6 engines.
Features a 25 percent underdrive to reduce accessory drag.
Aluminum construction for lighter weight.
5.43-inch diameter with a 6-groove design.
Helps free up a small amount of engine horsepower.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

ATI is well-known for making high-performance harmonic balancers and underdrive pulleys. This specific drive pulley, part number 916237, is designed for Dodge vehicles equipped with the 3.7L or 4.7L V6 engines. It's a 25 percent underdrive unit, meaning it spins your engine's accessories like the alternator, power steering pump, and water pump at a slower speed than the crankshaft. This reduces drag on the engine, freeing up a little extra horsepower and potentially improving throttle response.

Constructed from aluminum, this pulley is lighter than a stock steel unit, which can also contribute to a slight performance improvement. The 5.43-inch diameter and 6-groove design ensure it works with your existing accessory belt setup. Installing an underdrive pulley is a common modification for those looking to get a bit more out of their engine, especially in applications where every bit of power counts.