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KeyStart ULK639 Advanced Security Automotive Remote HD Key Sidewinder Blade For Honda

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

A factory-fit replacement remote head key for compatible Honda models, cut double-sided with a durable black plastic head.
Keystart MPN 9985537
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Keystart item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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Why isn't this online? The whole story →

About Product Overview

This is a remote head key built for Honda vehicles that use the ULK639 platform, combining the physical key blade with the remote fob in one piece. It's cut as a double-sided key and comes with a plastic head housing in black, designed to hold up to daily pocket and keyring wear.

Because it's an advanced security key, it's meant for replacement situations where the original remote head key was lost, damaged, or you need a spare that matches factory fit and function. Fitting the right vehicle matters with these - Honda's remote head keys vary by model and year, so this one is built specifically for compatible Honda applications rather than as a universal fit.

Made in the USA and sold individually, this is a straightforward replacement part for anyone dealing with a missing or worn-out Honda key rather than a full lock or ignition swap.

  • Brand: KeyStart, Sub Brand ULK639
  • Key Type: Automotive Remote Head Key
  • Model Compatibility: Honda
  • Cut Type: Double
  • Head Material: Plastic, Black
  • Country of Origin: USA

The Details Specifications

Ships Ground Travels by ground for safe handling — common for items with a lithium battery, aerosol, or liquid inside. Nothing extra to do on your end; it simply ships by truck instead of by air.
Brand Keystart
Model / MPN 9985537
UPC 755003140566
Weight Under 1 lb
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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