Decoding Engine Codes

This table shows all engines available on the Volkswagen Type 4 (411 and 412) during its production run. “Letter” designates the code letter stamped onto the crancase, “Dates” pertains to the dates between which the engine was built while “Count” specifies the last engine number used in that time frame. This “Count” does not represent the actual number of engines built, though. “Displacement” is in liters.

Letter	Dates	Count	Displacement	Output	Remarks
V	8/68-7/69	V 100,000	1.7	50 kw/68 hp	Carburated
W	8/69-7/73	W 250,000	1.7	59 kw/80 hp	D-Jetronic
Z	8/69-7/73	Z 30,000	1.7	50 kw/68 hp	Carburated
EA	8/71-7/74	EA 104,000	1.7	59 kw/80 hp	D-Jetronic [4] M 27 [1] M 553 [2] M 157 [3]
EB	8/72-7/73	EB 10,020	1.7	53 kw/72 hp	D-JetronicM 27 [1] M 553 [2]
EC	8/73-7/74	EC 39,000	1.8	56 kw/76 hp	L-Jetronic [5] M 27 [1] M 157 [3]
AN	8/73-7/74	AN 10,000	1.8	63 kw/85 hp	Carburated
AT	8/73-7/74	AT 9,000	1.8	55 kw/75 hp	Carburated

Footnotes

[1] (1,2,3)

M 27=California emission compliant

[2] (1,2)

M 553=U.S./Canadian option package (all vehicles going to these markets through 7/73)

[3] (1,2)

M 157=Exhaust Gas Recirculation-system and activated charcoal canister for controllinggasoline fumes from tank. Used on U.S./Canadian vehicles from 8/73-8/74

[4]

Engine EA was used with both manual and automatic transmissions to engine # EA 098 793. Used with manual transmissions only after # EA 098 794 (automatic models from then on with engine EC).

[5]

Engine EC comes only with automatic transmission.