Can I replace Mazda 2.3L with 2.0L engine without touching the wire harness?


Asked by Jul 30, 2014 at 03:35 AM about the 2003 Mazda MAZDA6 4 Dr i Sedan

Question type: Car Customization

I own a 2003 2.3L European JMZGG 166HP Hatchback Mazda 6. My engine's nikasil coating is damaged after putting chrome plated piston rings in 1000 miles. I'm willing to avoid this problematic engine with its balancing shaft preventing from proper oiling the middle cylinders. I would like to put a regular 2.0 liter engine as they seem to last longer and are affordable. The gearboxes are the same. I know I have to swap both the engine and the computers, but what about the wire harness. Will it fit? My engine has vvt and uses spark plugs. The new 2.0L mazda engines (After 2006 including I think) use ignition coil and have vvt. Can somebody tell me if I can swap an engine from 2.0 with ECU, which year this car should be (pre or after 2006) in order to keep my stock wire harness.

The engine looks like this:

3 Answers


sounds like a mess to me- you can expect problems- how can someone love a 2003 Mazda enough to go through all this? I don't get it-


1. The car has an Austrian external tuning 2. Almost every part except for the engine was checked and replaced by me 3. An anti-corrosion treatment was applied on every part from below 4. The car "used to" drive very comfortably 5. Bose premium 7 channel Sound 6. Added bluetooth&mic&mp3 playing system 7. Many other things which, will not convince you if the above didn't. And last but not least - once I start something I try to make it to the end. Regards

Joshua Belton

What did you find out??

Your Answer

Add photo

Related Questions


Looking for a Used MAZDA6 in your area?

CarGurus has 15,058 nationwide MAZDA6 listings starting at $1,450.


Search Mazda MAZDA6 Questions

Mazda MAZDA6 Experts

#1 Tom Demyan
Tom Demyan
Reputation 180
#2 FordNut
Reputation 160
#3 tennisshoes
Reputation 90
View All

Related Models For Sale

Used Mazda MAZDA3"
462 Great Deals out of 24,652 listings starting at $1,981
Used Honda Accord"
1,263 Great Deals out of 78,694 listings starting at $1,400
Used Toyota Camry"
1,608 Great Deals out of 98,371 listings starting at $895
Used Nissan Altima"
1,360 Great Deals out of 87,464 listings starting at $1,095
Used Honda Civic"
1,148 Great Deals out of 59,092 listings starting at $995
Used Nissan Maxima"
496 Great Deals out of 24,224 listings starting at $1,500
Used Hyundai Sonata"
974 Great Deals out of 51,468 listings starting at $1,200
Used Kia Optima"
606 Great Deals out of 31,665 listings starting at $1,700
Used Chevrolet Malibu"
1,151 Great Deals out of 73,044 listings starting at $695
Used BMW 3 Series"
1,615 Great Deals out of 39,618 listings starting at $888
Used Toyota Corolla"
1,417 Great Deals out of 67,100 listings starting at $1,295
Used Ford Mustang"
737 Great Deals out of 41,065 listings starting at $900

Used Cars For Sale

2016 Mazda MAZDA6 For Sale
42 Great Deals out of 4,425 listings starting at $11,691
2015 Mazda MAZDA6 For Sale
35 Great Deals out of 816 listings starting at $9,900
2014 Mazda MAZDA6 For Sale
62 Great Deals out of 1,260 listings starting at $10,900
2013 Mazda MAZDA6 For Sale
9 Great Deals out of 300 listings starting at $7,789
2012 Mazda MAZDA6 For Sale
19 Great Deals out of 457 listings starting at $5,499