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Please post head codes from your Honda engines here

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Old 06-03-2014, 03:00 PM
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Default Please post head codes from your Honda engines here
Members are often interested in identifying the head on their Honda engine by the head code.

HondaPartsHero has a thread here describing how to locate the head and block codes on your engine.

The list below combines and updates the head codes posted in these two related 2004 threads: Thread 1 and Thread 2.

I thought the large membership in this forum might further enlarge the list by posting the head codes of your engines. For example, my 97 Civic DX with a P2A-11 head was a new addition to the list.

SOHC Head Codes
D14A1 (EDM)
89 Civic GL HB twin-carb 5sp---------------PM2/E1

D14A3 (EDM)
Pre-1988 1500cc GT 3rd gen-----------------P2A-9
97 1.4i HB 5sp-----------------------------P2A-9

D14A4 (EDM?)
96 Civic-----------------------------------P2A-4

D15B1
89 hatch-----------------------------------PM9-6 (Year Code 8/9)
90 Std 4sp---------------------------------PM9-5
90 Std 4sp---------------------------------PM9-4
91 Std 4sp---------------------------------PM9-3, PM9-4

D15B2
88 Auto------------------------------------PM3-6 (Year Code 8/8)
88 Hatch Auto------------------------------PM3-8
90 LX 5sp----------------------------------PM3-9 (Year Code 9/0)
91 DX 5sp----------------------------------PM8-12
91 HF--------------------------------------P2H-HA-5
93 EG4(EDM)5sp-----------------------------PM3-8 (Year Code 9/4)
Swap 92 CX---------------------------------PM3-16 (Year Code 9/0)

D15B6
89 crx HF 5sp------------------------------PM8-2
89 crx HF----------------------------------PM8-1 (Year Code 9/0)

D15B7
93 LX auto---------------------------------PM9-6 (Year Code 9/2)
94 DX 5sp----------------------------------PMS-1
94?----------------------------------------PM3-12 (Year Code 9/3)
95 CX--------------------------------------PM9-3 (Year Code 9/4)
95 DX 5sp----------------------------------PM9-5
95 DX--------------------------------------PM3-5 (Year Code 9/5)
95 DX--------------------------------------PM9-3 (Year Code 9/4)
95 LX Sedan 5sp----------------------------PM9-2

D15B8
92 CX 5sp----------------------------------PM8-1
92-----------------------------------------PM8-2 (Year Code 9/2)

D15B Carb (JDM)
92 or 93 ----------------------------------PM3-11 (Year Code 9/2)

D15B VTEC (JDM)
92 VTi Auto--------------------------------P08-1 (Year Code 9/1)
?------------------------------------------P08-3

D15B VTEC-E (JDM)
94-----------------------------------------P07-1 (Year Code 9/4)

D15B 3 STAGE VTEC/VTEC-E OBD2 (JDM)
96-----------------------------------------P2J (Year Code 9/5)

D15Z1
92 VX 5sp----------------------------------P07-1

D15Z3 VTEC-E (EDM)
95 LS 5sp----------------------------------P07-1 (Year Code 9/5) (P1G ECU)

D16A VTEC-E (JDM)
Swap 98 DX---------------------------------P2J-3 (Year Code 9/7)

D16A6
88?----------------------------------------PM3-8
88 Si--------------------------------------PM3-11 (Year Code 8/8)
88 RT Auto---------------------------------PM3-7
89 Si Hatch 5sp----------------------------PM9-6
90 Si 5sp----------------------------------PM3-1
90 Si 5sp----------------------------------PM3-4

D16B5
98 GX--------------------------------------P2J-1

D16Y4
96 GLi 5sp---------------------------------P2A-2 (Year Code 9/6)

D16Y5
96 HX 5spd---------------------------------P2J-7
98 or 99 HX--------------------------------P2J-6 (Year Code 9/8)


D16Y7
97 DX 5sp----------------------------------P2A-11 (Year Code 9/6)
97 LX 5sp----------------------------------P2F-HA-2
97 LX Auto---------------------------------P2F-HA-4 (Year Code 9/6)
98 DX 5sp----------------------------------P2F-HA-3 (Year Code 9/7)
98 DX Auto---------------------------------P2F-HA-7 (Year Code 9/8)
00 DX Auto---------------------------------P2F-HA-7

D16Y8
96?----------------------------------------P2J-5 (Year Code 9/5)
96 EX Auto---------------------------------P2J-2 (Year Code 9/5)
97 EX 5sp----------------------------------P2J-4 (Year Code 9/7)
97 EX 5sp----------------------------------P2J-1
97 EX Auto---------------------------------P2J-6 (Year Code 9/7)
97 EX Auto---------------------------------P2J-7
97 EX 5sp----------------------------------P2J-6 (Year Code 9/6)
97 EX 5sp----------------------------------P2J-4 (Year Code 9/5)
98 EX Auto---------------------------------P23-2
98 EX Auto---------------------------------P2J-5 (Year Code 9/8)
98 EX Auto (SDN)---------------------------P2J-7 (Year Code 9/8)
99? EX-------------------------------------P2J-4 (Year Code 9/8)
99 EX 5sp----------------------------------P2J-4
99 EX 5sp----------------------------------P2J-7 (Year Code 9/9)
99 EX Auto---------------------------------P2J-6 (Year Code 9/9)
99 ----------------------------------------P2J-5
00 EX 5sp----------------------------------P2J-3 (Year Code 9/9)
00 EX Auto---------------------------------P2J-7 (Year Code 0/0)
00 EX Auto---------------------------------P2J-4

D16Z6
92 Si 5sp----------------------------------P08-2 (Year Code 9/2)
93 Si 5sp----------------------------------P08-4 (Year Code 9/3)
93 Del Sol Si------------------------------P08-5
93 EX 5sp----------------------------------P08-4
93 EX 5sp----------------------------------P08-3
94 EX 5sp----------------------------------PO8-2
94 Si 5sp----------------------------------P08-3
94 EX 5sp----------------------------------P08-4
94 SI 5sp----------------------------------P08-5
95 EX Auto---------------------------------P08-2

D16Z7
? CVT--------------------------------------P2J-4 (Year Code 9/9)

ZC SOHC VTEC (OBD1)
94 Domani Auto-----------------------------P08-6 (Year code 9/3)
??-----------------------------------------P08-3
??-----------------------------------------P08-1 (Year Code 9/4)

ZC SOHC VTEC (OBD2)
97 ??--------------------------------------P2J-1 (Year code 97)

ZC SOHC NON-VTEC
89-----------------------------------------PM3-3
96-----------------------------------------P2A-10 (Year Code 9/8)
96-00--------------------------------------P2A-3, -4, -5, -8, -9, -10
DOHC Head Codes
B16/ITR------------------------------------PR3

B16a2
99-00 Civic Si-----------------------------P30

ITR-----------------------------------------P73

B18B---------------------------------------P75

B18C---------------------------------------P72

B20B
98 CRV------------------------------------P8r-11

ZC (JDM)
89 5sp-------------------------------------PM7
Last edited by TomCat39; 03-13-2021 at 03:39 PM. Reason: Adding latest head code additions from thread.
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Old 06-03-2014, 07:54 PM
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Default Re: Post head codes from your Honda engines here
Hey Ron, were you not aware of the list in Misc/Tech forum for D series?

https://honda-tech.com/forums/showthread.php?t=786093

This may be handy so people can cross reference casting stamps between motors (i.e. D15B7 has same head specs as the D16A6)

Name: honda_engine_specs2.jpg Views: 30570 Size: 322.7 KB
Last edited by TomCat39; 06-08-2014 at 02:17 PM.
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Old 06-07-2014, 10:16 PM
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Default Re: Post head codes from your Honda engines here
Unknown Car D15B7 transplanted into my 95 looks to be from a 94 Civic:

Name: IMG_0931[1].jpg Views: 22108 Size: 150.5 KB

Unknown Car D16Y8 unknown condition given to me by a friend Looks to be from a 99 civic:

Name: IMG_0932[1].jpg Views: 20085 Size: 143.5 KB
Name: IMG_0933[1].jpg Views: 19553 Size: 147.4 KB

Unknown Car D16Y8 good running condition given to me by my Honda Tech friend instead of just scrapping it looks to be from a 96 civic:

Name: IMG_0934[1].jpg Views: 20196 Size: 142.3 KB
Name: IMG_0935[1].jpg Views: 21232 Size: 154.3 KB

1995 Canadian Civic CX original motor by the looks:

Name: IMG_0936[1].jpg Views: 18939 Size: 213.1 KB
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Old 06-08-2014, 05:52 AM
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Default Re: Post head codes from your Honda engines here
^added. Thanks.
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Old 06-08-2014, 02:46 PM
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Default Re: Please post head codes from your Honda engines here
I'll have to check my D16A (there is no number after the A, it's just "D16A"), which I was told was the JDM equivalent of a D16Z6.
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Old 06-08-2014, 03:04 PM
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Default Re: Please post head codes from your Honda engines here
My cylinder head says pm9-3 (94)

is 94 on the engine normal for a 95 car?

its a 95 dx w/ I'm guessing original d15b7
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Old 06-08-2014, 03:46 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by shotoutacc0rd
My cylinder head says pm9-3 (94)

its a 95 dx w/ I'm guessing original d15b7
Added^
Thanks.

is 94 on the engine normal for a 95 car?
Yep
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Old 06-08-2014, 04:59 PM
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Default Re: Please post head codes from your Honda engines here
p8r-11 98 crv?
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Old 06-08-2014, 05:02 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by CivicInUse22
p8r-11 98 crv?
What engine? Stock CRV?
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Old 06-08-2014, 05:21 PM
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Default Re: Please post head codes from your Honda engines here
jdm b20b. I think the head was off some special edition crv but the year is 98
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Old 06-08-2014, 05:23 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by CivicInUse22
jdm b20b. I think the head was off some special edition crv but the year is 98
Did the special edition 98 CRV have a B20B block?
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Old 06-08-2014, 06:07 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by RonJ@HT
Did the special edition 98 CRV have a B20B block?
Yes
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Old 06-08-2014, 06:15 PM
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Default Re: Please post head codes from your Honda engines here
Added. Thanks.
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Old 06-08-2014, 06:36 PM
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Default Re: Please post head codes from your Honda engines here
I added some DOHC head codes. Are they correct? Did I miss some?
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Old 02-10-2015, 03:35 PM
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Default Re: Please post head codes from your Honda engines here
93 LX Sedan Civic Automatic, white, D15B7 stamped PM9-6 dated 92 on stamp between cylinders 3-4 on exhaust side. Between cylinders 1-2 stamped 8 , 11, 02. Stamped A28130352 beside distributor
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Old 02-10-2015, 06:25 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by erollman
93 LX Sedan Civic Automatic, white, D15B7 stamped PM9-6 dated 92 on stamp between cylinders 3-4 on exhaust side. Between cylinders 1-2 stamped 8 , 11, 02. Stamped A28130352 beside distributor
Added. Thanks.
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Old 02-11-2015, 12:10 AM
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Default Re: Please post head codes from your Honda engines here
P08-6 / D16ZC SOHC VTEC / Date Code: 9|3 / Serial: B3031 60531 / Transmission: S24A Serial: 4064485 / Pulled from a 1994 Honda Domani Auto

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Old 02-11-2015, 05:31 AM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by MisereNoire
P08-6 / D16ZC SOHC VTEC / Date Code: 9|3 / Serial: B3031 60531 / Transmission: S24A Serial: 4064485 / Pulled from a 1994 Honda Domani Auto
Added.
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Old 02-25-2015, 09:25 PM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by d_seriesef
Have two heads pm3-3 and pm9-6 9|0 stamped.???? What are they?
Looks like D15B2 and D16A6 would be my speculations. What's the year stamp on the pm3-3? the pm9-3 is from a 91 as it's year stamp is '90.
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Old 02-26-2015, 01:28 AM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by TomCat39
Looks like D15B2 and D16A6 would be my speculations. What's the year stamp on the pm3-3? the pm9-3 is from a 91 as it's year stamp is '90.
pm3-3 9|0 and its a pm9-6 not pm9-3
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Old 02-26-2015, 05:25 AM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by d_seriesef
pm3-3 9|0 and its a pm9-6 not pm9-3
Yeah same gig, the PM9-6 can either be a D16A6 or a D15B7 as the only difference is the cam shaft on the two. You will have to measure the lobes of the cam shaft to know if it's the A6 or the B7.

I'm thinking being form a 91 car, the PM3-3 maybe the same gig as either B7 or A6 and will need to measure the cam lobes to know which one.

The ZC with the PM3-3 is from 88 and would have a year stamp of 87 if it's original. I believe by 91 (casting stamp 90) the PM3's were used for the A6's and B7's. There is a pretty good chance that since it was before 92 though that they are A6 models. Cam lobe measurement will confirm.
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Old 02-26-2015, 09:16 AM
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Default Re: Please post head codes from your Honda engines here
My cylinder heads say B25C.... I don't know what that means.


Whats the difference between PR3, PR3-1, PR3-2, PR3-3?
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Old 02-26-2015, 10:22 AM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by slomofo
My cylinder heads say B25C.... I don't know what that means.


Whats the difference between PR3, PR3-1, PR3-2, PR3-3?
Great questions slomo.
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Old 02-26-2015, 10:42 AM
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Default Re: Please post head codes from your Honda engines here
Originally Posted by slomofo
Whats the difference between PR3, PR3-1, PR3-2, PR3-3?
I thought I had seen someone say that the -X number was to indicate which casting station it was cast in. I can't find the tidbit right now, but that's what I recall reading somewhere.

Kind of makes sense, if they are casting in 4 different stations, and they find a problem with a head, they would want to know what station has the possible bad mold.
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Old 02-26-2015, 12:23 PM
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Default Re: Please post head codes from your Honda engines here
Or perhaps it's the generation of the mold it was formed in. You may have noticed that all PR3-3 heads came from OBDII cars and PR3-2 heads weren't found before 1992.


Subarus do this same thing. USDM STI engines have a 70X number in the blocks. 701 is 04-05. 702 is 06-07, 703 is 08+. The one I put in my Forester was a 704 I bought from the dealer two months ago, so I think that was the latest generation.
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