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VW Engine Letter Codes
Also see the VIN Numbers section above for a month-by-month breakdown of pre-1968 vehicles.
In the tables below "Code" refers to the first 1 or 2 digits of the engine number.
Corrections or additions welcome.
Please also see the Engine code letters VW booklet

Type 1
Code Year Engine/Notes
1- Pre-Jan., 1956 25hp/36hp
1- prefix indicates Type 1 and is not part of the sequential engine number.
2, 3, 4 1955-65 1200cc 30bhp DIN, 36HP SAE (A series engine)
5, 6, 7, 8, 9 1961-65 1200cc 34bhp DIN, 40HP SAE (VW D added below serial after 9247364)
D0, D1 1966-1985 1200cc 34bhp DIN, 40HP SAE For Mexican made 1200s after 1977.
E0 1966-1970 1300cc 37bhp DIN. Non-USA M240 low compression
F0, F1, F2 1966-1970 1300cc 40bhp DIN, 50HP SAE (only 1966 in USA, 66-70 elsewhere)
H0, H1 1967-1970 1500cc 44bhp DIN, 53HP SAE (only 1967 in USA, 67-70 elsewhere)
H5 1968-69 1500cc 44bhp DIN, 53HP SAE M157 USA/Canada.
B6 1970 1600cc Dual relief, single port, 47bhp DIN, 57HP SAE M157 USA/Canada.
L0 1967-1970 1500cc 40bhp DIN. Non-USA M240 low compression
NOTE: all the following 1971-up engines are dual relief and dual port.
AB 1971-73 1300cc 44bhp DIN, Non-USA.
AC 1971-72 1300cc 40bhp DIN, Non-USA M240 low octane
AE 1971 1600cc 50bhp DIN, 60HP SAE-gross. USA-only
AE 1972-73 1600cc 48bhp DIN, 48HP SAE-net. USA-only (compression ratio reduced)
AF 1971-1982? 1600cc 46bhp DIN, Non-USA M240 low octane.
AH 1973-74 1600cc 48bhp DIN, 46HP SAE-net. USA-only
AK 1973 1600cc 48bhp DIN, 46HP SAE-net. USA-only
AJ 1975-79 1600cc 50bhp DIN, 48HP SAE-net. Fuel Injected.
AR 1974-75 1300cc 44bhp DIN. Non-USA.
AS 1974-79 1600cc 50bhp DIN. Non-USA.
ACD 1992-2004 1600cc 46bhp DIN. Mexico. Fuel Injected.

 

Type 2
Code Year Engine/Notes
20- Pre-Jan., 1956 25hp/36hp
20- prefix indicates Type 2 and is not part of the sequential engine number.
2, 3, 4 55-60 1200cc, 36hp (includes Bastard 40hp)
5, 6, 7, 8, 9 1961-65 1200cc, 40hp
O 1963-65 1500cc - no cam bearings
H0 1966-67 1500cc
L0 1967 1500cc M240 low compression
B0 1968-70 1600cc non-USA.
B5 1968-69 1600cc single relief USA only
B5 1970 1600cc dual relief USA only
C0 1968-70 1600cc 44bhp. Non-USA. M240 low octane.
AD 1971-73 1600cc 50bhp DIN. Non-USA.
AB 1971 1300cc 44bhp DIN, Non-USA. M252
AE 1971 1600cc 50bhp DIN, 60HP SAE-gross. USA-only
AS 1974-79 1600cc 50bhp DIN. Non-USA
CB 1972/73 1700cc - dual carb., manual transmission
CD 1973 1700cc - dual carb., automatic transmission
AW 1973/74 1800cc - dual carb.
AW 1975 1800cc - fuel-injected
AP 1974/75 1800cc - European only
ED 1975 1800cc
GD 1976/77 2000cc
CJ 1976-1979 2000cc - European only
GE 1978/79 2000cc
CU 1980-1983 2000cc - Vanagon style
CV 1980-1983 2000cc - Vanagon style

 

Type 3
Code Year Engine/Notes
O 1961-65 1500cc
K0 1966-1972 1500cc - 54hp
M0 1966-1972 1500cc - M240 low compression 52hp
P0 1966/67 1600cc - M240 low compression 50hp
T0 1966-1973 1600cc
U0 1968-1973 1600cc - fuel injected for USA
U0 1970 1600cc - dual-relief case
U5 1971-1973 1600cc - 7.7:1 compression - US/Canada M239 California fuel-injection
X 1972 1600cc - 7.3:1 compression - California

 

Type 4
Code Year Engine/Notes
V 1969 1700cc - 68hp
Z 1969/70 1700cc - 7.8:1 compression - 68hp, dual carb., automatic transmission
W 1971 1700cc - 8.2:1 compression - 80hp
EA 1972-1974 1700cc
EB 1973 1700cc - California only, fuel injection
EC 1974 1800cc
AN 1974 1800cc - 8.6:1 compression
AT 1974 1800cc - European only, dual carb.

 

Porsche 914
Code Year Engine/Notes
W 1970/71 1700cc - 8.2:1 compression - 80hp
EA 1972-1973 1700cc
EB 1973 1700cc - 7.3: compression, California only, fuel injection
EC 1974 1800cc - California only, 7.6:1 compression
AN   1800cc - 8.6:1 compression
GA 1973/74 2000cc - 7.6:1 comporession
GB 1973-1976 2000cc - 8.0:1 compresssion
GC 1975/76 2000cc - 7.6:1 compresssion
V0   1700cc - European-only
1800cc - European-only
2000cc - European-only

 

Engines from VW of Brazil
Information from this Forums thread
GAS-Gasoline / Alcohol-ALC

BA - 1600 - BRASILIA (1976)
BD - 1600 BEETLE GAS
BG - 1600 GAS AND KOMBI KOMBI EXP
BJ - 1300 BEETLE GAS
BK - 1300 LAC BEETLE BRASILIA
BM - 1300 LAC GOL
BN - BRAZIL GAS 1600
BV - 1600 GAS VARIANT
BX - 1600 LAC KOMBI KOMBI EXP
BY - 1300 GOL GAS
BZ - 1600 GAS VAN
UF - 1600 BEETLE GAS
UG - 1600 GAS VAN
UJ - 1600 LAC BEETLE
UK - 1600 LAC VAN

Motors above 90

UFA - 1600 BEETLE GAS
UJA - 1600 LAC BEETLE
UGA - 1600 GAS VAN CARAT

 

Replacement cases
These cases were VW engine cases that were sold from VW but never issued in an actual production vehicle.  All are dual-relief cases with 100mm oil passages.
Example:

Information from a 5/73 USA service bulletin issued 5/73:
Engines with the re-manufactured symbol, a letter, a number and ending with X, indicates a VW Exchange engine.  Before Oct., 1968 the X was not stamped onto the block.

From April of 1972 Shortblocks were sold with the VW remanufacture symbol followed by a letter. No numbers were used, you were to stamp in the old engine number.

F1 1300/1600
F2 1300/1600
DO 40hp if last digit is "X"
D1 40hp part
AD 1600
AK 1967-1974 1500/1600
AM 1600
AS  Sometimes seen listed as Super Beetle case for 1973-onward

 

Exchange engines
These engines are normally marked with a VW recycle symbol and an X at the end.
Example:

Information from a 5/73 USA service bulletin issued 5/73:
Engines with the re-manufactured symbol, a letter, a number and ending with X, indicates a VW Exchange engine.  Before Oct., 1968 the X was not stamped onto the block.

From April of 1972 Shortblocks were sold with the VW remanufacture symbol followed by a letter. No numbers were used, you were to stamp in the old engine number.


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