When you're dealing with marine steering controls and propellers, throttle response is everything. The two parts here take very different approaches to the same repair: one is a replacement cable, the other is a complete throttle control unit. If your control lever box is still sound, a simple cable swap may be enough. If the whole control unit needs to go, you're looking at a much more involved purchase. The right choice depends on whether you're fixing a worn cable or replacing the entire component.
Quick verdict
Choose the Seawell cable if your control lever box is in good shape and only the cable needs replacing. Choose the Kwant Controls 364.G88 if you need a complete throttle control unit and are comfortable handling a part with an uncertain history.
Compare at a glance
| Product | Price | Price bar | Condition | Watch out |
|---|---|---|---|---|
| Seawell 10 ft Universal Marine Throttle Control Cable for YAMAHA Boat Control Lever Box | USD 27.99 | New | 10 ft length; universal fit needs to match your setup | |
| Kwant Controls 364.G88 -BUK-H Marine Engine Throttle Control Unit w/ Harness | USD 999.99 | Used | From a lightning-struck vessel; buyer handles installation/testing |
Where each product wins
- The Seawell cable wins for a simple cable replacement at a much lower price. It's a new part that suits most outboard, outdrive, and inboard units.
- The Kwant Controls unit wins when you need the whole throttle control package. You get the throttle control and wiring in one purchase, but you also take on the risk that comes with a part of uncertain history.
Product notes
Seawell 10 ft Universal Marine Throttle Control Cable for YAMAHA Boat Control Lever Box

The Seawell is a 10-foot replacement cable built for Yamaha boat control lever boxes. Its 33C Supreme Blue Jacket construction uses a splined core wire to glide smoothly through the inner liner, and the stainless steel end fitting is ready for single or dual station setups. At $27.99, this is a simple way to restore crisp throttle action if the cable is the weak link. The design suits most outboard, outdrive, and inboard units, with a nominal 75mm travel and a 100mm minimum bend radius. The limitation: it's only the cable. You're keeping your existing lever box and need to confirm that 10 feet and the universal fit work for your particular routing.
Kwant Controls 364.G88 -BUK-H Marine Engine Throttle Control Unit w/ Harness

The Kwant Controls 364.G88 is a complete marine engine throttle control unit with harness, priced at $999.99. This is a used part that came from a vessel struck by lightning. Insurance companies often replace such parts as a precaution, so there's a chance the unit is still fully functional, but you're buying uncertainty. The buyer accepts full responsibility for proper installation, testing, operation, and use. If you're replacing the entire throttle control and harness, this gives you everything in one purchase. The catch is the condition history: you take on the testing, and at this price you need to be comfortable with that gamble.
Final choice by use case
If your control lever box is intact and you just want to replace a worn cable, go with the Seawell cable. If you're replacing the entire throttle control unit, the Kwant Controls 364.G88 is the unit to consider. Be ready to handle installation, testing, and operation yourself.