Sierra Idle Speed Control Motor 18-7701 for MerCruiser 5.7L 350 V-8 MPI

The Sierra 18-7701 is an idle speed control motor built for specific MerCruiser 5.7L 350 V-8 MPI engine applications. This component regulates idle air/speed on the engine's induction system, helping the engine hold a stable idle. It is supplied as a single, ready-to-install unit and is constructed with glass-reinforced material for durability in a marine engine bay environment.

This idle speed control motor is designated for MerCruiser 350 MAG MPI SKI engines built within the M300000 - A064824 and A064825 - A089999 serial number ranges, as well as MerCruiser 5.7L MPI Horizon MIE and 5.7L MPI MIE engines built from serial number A090000 and up. Confirm your engine's serial number range against these fitment ranges before ordering to ensure correct application.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7701
• Product Type: Idle Speed Control Motor
• Material: Glass
• Weight: 0.66 pounds
• UPC: 808282287351
• Number of Items: 1
• Warranty: Limited Warranty

Fitment

• MerCruiser 350 MAG MPI SKI, 5.7L 350 V-8, 2002-2007, serial number M300000 - A064824
• MerCruiser 350 MAG MPI SKI, 5.7L 350 V-8, 2007, serial number A064825 - A089999
• MerCruiser 5.7L MPI Horizon MIE, 5.7L 350 V-8, 2008-2010, serial number A090000 and up
• MerCruiser 5.7L MPI MIE, 5.7L 350 V-8, 2008-2010, serial number A090000 and up

Frequently Asked Questions

What engines does the Sierra 18-7701 idle speed control motor fit? The Sierra 18-7701 fits MerCruiser 350 MAG MPI SKI engines (serial number M300000 - A064824 and A064825 - A089999) and MerCruiser 5.7L MPI Horizon MIE and 5.7L MPI MIE engines (serial number A090000 and up), all 5.7L 350 V-8 applications.

How do I confirm the 18-7701 is correct for my MerCruiser engine? Check your MerCruiser engine's serial number against the ranges listed for the 18-7701: M300000 - A064824 or A064825 - A089999 for 350 MAG MPI SKI engines, or A090000 and up for 5.7L MPI Horizon MIE and 5.7L MPI MIE engines.

What is included when I order the 18-7701? The order includes one Sierra 18-7701 idle speed control motor, ready to install on a compatible MerCruiser 5.7L 350 V-8 MPI engine.

How much does the Sierra 18-7701 weigh? The Sierra 18-7701 idle speed control motor weighs 0.66 pounds.

What material is the 18-7701 idle speed control motor made from? The Sierra 18-7701 idle speed control motor is constructed with glass-reinforced material.

Is the Sierra 18-7701 a genuine Sierra part? Yes, the 18-7701 is sold under the Sierra brand as part number 18-7701.

Does the 18-7701 fit MerCruiser 350 MAG MPI SKI engines built before serial number M300000? No. The 18-7701 is designated for 350 MAG MPI SKI engines within the M300000 - A064824 and A064825 - A089999 serial number ranges; earlier serial ranges use a different Sierra part number.

Does the 18-7701 come with a warranty? The Sierra 18-7701 idle speed control motor is backed by a limited warranty.

What function does the idle speed control motor serve on a MerCruiser engine? The 18-7701 idle speed control motor regulates idle air/speed on the engine's induction system to help a MerCruiser 5.7L 350 V-8 MPI engine maintain a stable idle.

Is the 18-7701 sold as a single unit? Yes, the Sierra 18-7701 is sold as one idle speed control motor unit.