Replacing a worn or outdated boat throttle control is rarely as simple as swapping one lever for another. You have to match the mounting style, cable type, connector, and often the trim and safety functions built into the housing. If the part you need is the Mercury/Mariner side-mount style with an 8-pin harness, the FASWORX Boat Throttle Control Box 881170A15 is worth a close look.
Quick verdict
The FASWORX 881170A15 is a complete side-mount control head designed to replace the 881170A15 and 8M0178521 for Mercury, Mariner, and Force outboards. For $199.00, you get the throttle handle, power trim switch, ignition switch, warning horn, emergency stop lanyard, and a fast idle lever in one unit. If your current control is failing or you're rewiring, this box consolidates the parts you'd otherwise have to source separately.
Who it suits
This control box suits boaters with Mercury, Mariner, or Force outboards that use a side-mount, 8-pin throttle control. It also fits boats with Generation I (Gen 1) throttle/shift cables, since that is the cable compatibility listed for this model. Shoppers who want a single replacement unit with a 15-foot wiring harness and 8-pin connector will appreciate the all-in-one approach.
What stands out from the listed details
The integrated thumb-operated power trim/tilt switch sits right on the handle, so you don't need a separate trim button. The control also includes a built-in warning horn, an ignition key switch with push-to-choke, and an emergency stop switch lanyard - items that often need to be bought separately. The fast idle lever is a useful touch for warming up the engine without shifting into gear.
Meaningful trade-offs
The key compatibility point to confirm is the cable system. The FASWORX 881170A15 is specified for Generation I throttle/shift cables, so if your boat uses a newer cable type, this control box won't be the right match. Also, because the unit bundles the ignition switch and warning horn, the $199.00 price reflects a full assembly rather than just a bare lever. If you already have a working ignition switch and need only the handle, the all-in-one design may include more than you need.
Product notes
Boat Throttle Control Box 881170A15 Mercury/Mariner Outboards, 8-Pin Side Mount
This FASWORX control box is built to factory specifications for Mercury, Mariner, and Force outboards. The 15-foot harness with an 8-pin connector is designed for straightforward installation. The handle includes the power trim switch, while the housing carries the ignition switch, warning horn, and emergency stop lanyard. The fast idle lever aids warm-ups without shifting into gear. At $199.00, it's a complete control head option for boats using Gen 1 cables.
Bottom line
If you need a side-mount 8-pin throttle control with trim, ignition, and safety features for a Mercury, Mariner, or Force outboard, the FASWORX 881170A15 is a solid choice. Just verify that your boat uses Generation I cables before ordering. At $199.00, you're getting a single replacement unit that brings together the control functions most boaters want.
