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HARRYS EURO - NZ's Largest Online Performance Parts Store
HARRYS EURO – NZ's Largest Online Performance Parts Store
Repair/Update Harness, Audi/Volkswagen 1.8T with 4-Wire Coils - 034-701-0004

Repair/Update Harness, Audi/Volkswagen 1.8T with 4-Wire Coils - 034-701-0004

by 034MOTORSPORT
$969.99
This product is ready to order. Orders will have an estimated 2-week lead time.

The VW and Audi 1.8T engine, due to the proximity of the coils on the valve cover near the exhaust, suffer from harness degredation.  This is surprisingly common on cars less than 5 years old.  The dealer recommends replacing the entire engine harness for over $1200.

Our harness solution uses automotive grade wiring and harness building materials designed to withstand years of abuse and offer an affordable, elegant solution.

12 wires need to be cut and crimped onto the OEM wiring, simply assemble the DT connector and plug the rest in.

Installation instructions can be found here: 1.8T Coil update install instructions.pdf

Fitment

Make Model Years Chassis Engine Audi A4 1996-2001 B5 1.8T Audi A4 2002-2005 B6 1.8T Audi TT 2000-2006 8N 1.8T (180HP) Audi TT 2000-2006 8N 1.8T (225HP) VW Beetle 1998-2010 MkIV 1.8T VW GLI 1999-2004 MkIV 1.8T VW Golf 1999-2005 MkIV 1.8T VW GTI 1999-2005 MkIV 1.8T VW Jetta 1999-2004 MkIV 1.8T VW Passat 1998-2005 B5/B5.5 1.8T VW Rabbit 1999-2005 MkIV 1.8T

 

034Motorsport Install Guide PDF

The installation of your 034Motorsport 4-Wire Repair/Update Harness for Audi/Volkswagen 1.8T is a fairly involved process. You can access our detailed installation guide by clicking the icon on the left.

 

Download 034Motorsport 4-Wire Repair/Update Harness for Audi/Volkswagen 1.8T Install Guide

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4.8
Based on 146 Google reviews
as of 01/05/2026
Shanijah Taylor
Shanijah Taylor
Just wanted to share some love to Harry's euro and their team! Bought parts for my r32 and gti, they never disappoint. Love being part of the euro community in an ever so dominant jdm culture in New Zealand. Looking forward to bringing an rs3 in for tuning :)
Greg Davies
Greg Davies
Great to have parts for my Range Rover so readily available in nz. Fast delivery and awesome quality products. Thanks guys!
Nick Ko
Nick Ko
I took my BMW to get the downpipe installed. Harry's Euro has done an excellent job. I'm very satisfied with the quality of their work. The staffs are very nice. Highly recommended. 10/10
Sebastian Ramirez
Sebastian Ramirez
I've been a loyal customer of Harry's Euro since 2017, and I can confidently say Scott and his team are the best in the game. Not only do they consistently offer the best prices, but the service is always top-notch. Scott is honest, transparent, and always takes the time to explain what’s going on with my car. Whether it's routine maintenance, unexpected repairs, or upgrades, I always know my car is in the best hands. Highly recommend to anyone looking for a reliable, expert mechanic!
Andrew Atkinson
Andrew Atkinson
Used Harry's Euro for years owning a Mk6R and now a Mk5 R32. Amazing service and delivery! R32 kit arrived today with some extra goodies! Pleasure to deal with the team!
Mark Barber
Mark Barber
Hands down the best Euro shop in Auckland. They've looked after 2 builds of mine, and the parts, service and expertise has been top notch.
Marc Graham
Marc Graham
Harry's Euros delivered platinum service from start to finish. The quality of the products is excellent, and the install experience was smooth and professional. If you want a lower cost acceleration boost ask Scott about a Pedal Box! Huge difference and very simple to use.
Quinn Ashby
Quinn Ashby
Got some basic servicing and a Stage 2 transmission tune done today to match the ECU tune. The team was really helpful with information, communication via email, fit me in quickly, and offered fair, industry standard pricing for a specialised shop. Highly recommend, and I'll definitely be back!
Hayden Lawrence
Hayden Lawrence
Great service. Needed a replacement driver's side mirror glass for our old GTI. Harry's Euro had it in stock for a good price and shipped it next day. Very pleased with the transaction and will happily recommend and use them again.
SladeDaSlide
SladeDaSlide
Been Working with Harry's Euro for almost 3 years now and I can highly recommend any auto-work or performance upgrades to be done by these guys. I've had my previous car and my current done by the team cheers to Scott and the boys for the work 🍻
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Harrys Euro in the Media.

New Zealand's automotive publications have documented our work and expertise.

Euro Tuning Explained – Project R Part 3
NZPC · Project Series 31 December 2025

Euro Tuning Explained: How It Really Works — Project R, Part 3

In part 3 of a featured Golf R build series, NZ Performance Car visited the Harrys Euro workshop to explore the realities of Euro tuning. The article highlights our team's expertise, detailing the installation and custom ECU/TCU calibration of the Harrys Euro Stage 2 EA888.3 400 Package.

Read Full Article on NZPC ↗

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