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2012 Civic VIN?

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Old Nov 14, 2018
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2012 Civic VIN?

Hello, could someone tell me what the 6th digit in the VIN indicates? Reason I ask is that I need to replace the engine and the local yard has a low mileage 2014 engine only available. I noticed while searching on eBay that the engines state 6th digit either a "2" or "3". Well my car is a 2 while the available motor is a 3 and I'd like to know the difference and what else may need to be changed if I in fact purchase said engine. I did look up the VIN and my car was ma ufactured in Indiana while the donor engine comes from Canada.
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Old Nov 15, 2018
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Re: 2012 Civic VIN?

Digits 4, 5, and 6 typically designate the chassis code for the car

For 9th gen civics, they are as follows:
Civic Sedan (non-Si): FB2
Civic Si Sedan: FB6
Civic Coupe (non-Si): FG3
Civic Si Coupe: FG4
Civic Hybrid: FB4

Civic Si's have the same engine (K24Z7, 2.4L DOHC iVTEC)
Non-Si trims all have the R18Z1 (1.8L SOHC iVTEC) engine.
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Old Nov 15, 2018
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Re: 2012 Civic VIN?

You probably only need the engine code. Maybe R18Z1 ? (I'm too lazy to go open the hood of my 12 and look LOL)
Find your engine code stamped in this area (pic below)

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Old Jan 29, 2026
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Re: 2012 Civic VIN?

The 6th digit in the VIN usually doesn’t directly define the physical engine block or bellhousing pattern; it’s typically part of the manufacturer’s internal coding for body style, series, or configuration, while the 8th digit is more commonly the true engine identifier. A “2” vs “3” in the 6th position often reflects production differences (market, trim, or assembly plant like US vs Canada) rather than a different engine casting.
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