Harnesses and PCMs LS Gen 3 and 4

Horton, MI

Shipping Available Worldwide  

Industry-Only Lifetime Warranty  

10% Discount for Military & First Responders

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LS Gen 3 and 4 Harnesses and PCMs in Horton, MI

When you're tackling an LS swap in Horton, MI, you need harnesses and PCMs that perform flawlessly. Swap Specialties delivers custom-engineered solutions for LS Gen 3 and 4 engines that make your project run smoothly. We've built over 15,000 harnesses and tuned more than 1.35 million horsepower. Our products are made in the USA and backed by the industry's only lifetime warranty. Reach out to us today to get started on your build.



Why You Need Quality LS Harnesses and PCMs

When you're swapping an LS Gen 3 or Gen 4 into a classic ride or building a custom project in Horton, your wiring and tuning must be spot-on. Poor-quality harnesses lead to electrical problems that can have you troubleshooting for months.

  • Plug-and-play solutions eliminate wiring complexity
  • Precision tuning ensures proper engine performance
  • Reliable components prevent costly electrical failures
  • Get your build running faster


The right harness and PCM combination makes your LS swap a straightforward process instead of a headache.



Why Choose Swap Specialties

Serving Horton, MI with 25 years of experience, we're the only company offering fully custom wiring solutions. Our team understands LS Gen 3 and 4 platforms inside and out, ensuring you get exactly what your build needs.

  • Industry-only lifetime warranty on all products
  • Custom harnesses tailored to your application
  • Over 15,000 harnesses proven in real-world builds
  • More than 1.35 million HP successfully tuned
  • Made in the USA quality you can trust
  • 36 platforms supported
  • Worldwide shipping available
  • 10% discounts for military and first responders


When you need harnesses and PCMs that stand the test of time, we've got the experience and warranty to back it up.



Contact Us

Ready to get your LS Gen 3 or 4 swap project in Horton, MI moving forward? We'll help you select the perfect harness and PCM combination for your build. Our team can answer your technical questions and ensure you get exactly what you need.


Contact us today and let's talk about making your LS swap a success.

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