GuldstrandPRO Motorsports FD3s RX7 20B Aftermarket ECU Engine Harness

Here at GuldstrandPRO we have been building replacement engine harness for the FD3S chassis since 2013. We offer these Motorsports grade replacement harnesses that utilize:

All new connectors 
New OEM Firewall boot
Raychem UK DR-25
M22759/32 Tefzel wire
Concentric twisting throughout
SCL GlueLine transitions
Plug n Play into Series 6 USDM LHD Manual RX7 chassis

If you are looking for custom, additional features or Automatic conversions, please reach us through our contact page and we will provide a quote and lead time.