FASWORX Boat Throttle Control Box 881170A15 — 8‑Pin 15 ft Side‑Mount Gen I with Trim/Tilt

The FASWORX 881170A15 is a drop-in side-mount replacement throttle/shift remote for Mercury/Mariner outboards with an 8-pin, 15 ft harness and handle-mounted power trim control.

This control box reproduces the familiar right-hand, pull-to-open layout used on many Mercury/Quicksilver side-mount installations and is cross-referenced to parts 8M0178521, 881170A1 and 16900A15. It includes a 15-foot Gen I 8-pin harness so you can plug the unit into compatible engines with minimal rewiring. The grip houses the trim/tilt switch and has provision for a warning horn, matching OEM form and function so installation and operation feel like the original.

Will this replace my existing Mercury side-mount remote?

If your current remote uses an 8-pin connector and a 15-foot lead, the FASWORX 881170A15 is designed as a direct replacement that mirrors the standard Mercury/Mariner layout. It fits installations identified as Commander 4000 or MSC 4000 style and supports Gen I control cables used on many models.

• Cross-referenced to Mercury part numbers 8M0178521, 881170A1, 16900A15.
• Right-hand pull-to-open handle with built-in trim/tilt on the grip.
• Includes an 8-pin, 15 ft harness for plug-in compatibility.

How do I know if wiring or adapters are required?

Most classic Mercury installations accept the included 8-pin harness without modification, but certain small 4-stroke engines (notably some 2005+ 8/9.9/15/20 HP models) may need an additional adapter harness. Verify engine compatibility before installation to avoid unexpected wiring work.

• Check engine year and model wiring diagram for front-mount trim circuits.
• Some late-model small four-strokes require an extra adapter harness.
• Use Gen I control cables; confirm connector orientation at the engine end.

What features does this control box include for daily boating use?

The FASWORX unit reproduces the ergonomic features boaters expect: a pull-to-open right-hand throttle, thumb-operated trim/tilt on the handle, and a horn provision. The marine-grade construction is geared toward straightforward aftermarket installation and dependable operation from the helm.

• Handle-mounted trim switch for convenient adjustments while underway.
• Built-in horn provision for integration into existing warning systems.
• Durable housing and OEM-style fit for replacement installs.

How simple is installation for a DIY replacement?

Installation is typically straightforward when replacing like-for-like: unbolt the old control, unplug the 8-pin harness, and connect the FASWORX unit. Basic mechanical skills and standard hand tools are usually sufficient; consult engine documentation for any model-specific wiring notes.

• Unplug old 8-pin connector and remove mounting fasteners.
• Route and secure the 15 ft harness, connect to engine harness.
• Verify trim/tilt and shift/throttle operation before final mounting.

Who this is for: This FASWORX control box is intended for boat owners, marine technicians and DIYers replacing worn or damaged Mercury/Mariner side-mount remotes that use the 8-pin, 15-foot harness layout. It suits repower projects, retrofit installs on compatible boats, and anyone seeking an OEM-style right-hand control with handle-mounted trim. If your vessel uses Gen I Mercury-style cables and you want a like-for-like replacement without custom wiring, this unit is a practical aftermarket choice.