OEM	OEM	Description	Used on
1654-29	25860-29	Timer drive gear key	1937 to 1950
1655	015	6-32 N.C. x 3/8" flat head screw
1658	11319-41E	6-32 N.C. x 7/16" Flat head machine screw
166-30	18170-30	Valve guide-standard (4)	1930 to 1948--74
166-30A	18171-30	Valve guide - .001" O.S	1930 to 1948--74" & 80" side valves
166-32		Valve guide - standard (4)	1932 to 1940
166-32A		Valve guide - .001" O.S.	1932 to 1940
166-32B		Valve guide - .002" O.S.	1932 to 1940
166-41	18176-41	Valve guide - standard (4)	1941 to 1950
166-41A	18179-41	Valve guide - .001" O.S.	1941 to 1950
166-41B	18180-41	Valve guide - .002" O.S.	1941 to 1950
1660-32		Positive brush holder assembly	1932 to 1950
		Part 1660-32 (Positive brush holder assembly) consists of:
		010: 6-32 N.C. x 1/4" fillister head screw
		1661-32: Main brush holder
		1663-32: Brush holder insulation
		1663-32A: Field coil terminal insulation
		1663-32B: Field coil terminal
		1664-32: Positive terminal screw
1660-32A		Negative brush holder assembly	1932 to 1950
		Part 1660-32A (Negative brush holder assembly) consists of:
		010: 6-32 N.C. x 1/4" fillister head screw
		0254: No. 10 x 21/64" x 3/64" lock washer
		1661-32: Main brush holder
		1667-32: Negative brush holder screw nut
16602-30		Nut - 7/16"-20 x 1/2" x 5/8"
1661	017	6-32 N.C. x 1/2" Flat head screw
1661-32	30351-32	Main brush holder	1932 to 1950
1661-51	30351-51	Brush holder (2)	1951 to 1957 -- radio generator
1662-32	30385-32	Third brush holder	1932 to 1950
1663-32	30365-32	Brush holder insulation	1932 to 1950
1663-32A	30228-32	Field coil terminal insulation	1932 to 1950
1663-32B	30231-32	Field coil terminal	1932 to 1950
1663-51	30373-51	Brush holder insulation	1951 to 1957 -- radio generator
1663-51A	30231-51	Field coil terminal	1932 to 1957 -- radio generator
1664-32	30460-32	Positive terminal screw	1932 to 1950
1664-32A	30461-32	Positive terminal screw with fittings	1932 to 1950
		Part 1664-32A (Positive terminal screw with fittings) consists of:
		0105: 10-32 N.F. x 1/8" x 5/16" hexagon nut (brass)
		0354: Terminal screw lock washer
		1664-32: Positive terminal screw
		1665-32: Terminal screw bushing
		1666-32: Terminal insulating washer
1665-32	30463-32	Terminal screw bushing	1932 to 1950
1666	11319-41F	6-32 N.C. x 11/16" Flat head screw
1666-32	6186	Terminal insulating washer	1932 to 1950
16661-40	10-40A	Set of aluminum cylinder heads (high compression) (marked 8.2)	1937 to 1948-74" & 80" side valves
		Part 16661-40 (Set of aluminum cylinder heads (high compression) (marked 8.2)) consists of:
		16666-40: Rear cylinder head
		16667-40: Front cylinder head
		16822-39: Cylinder head bolt washer (16)
16662-40	9-40A	Set of aluminum cylinder heads (medium compression) (marked 9.3)	1937 to 1946--74" & 80" side valves
		Part 16662-40 (Set of aluminum cylinder heads (medium compression) (marked 9.3)) consists of:
		16663-40: Front cylinder head
		16665-40: Rear cylinder head
		16822-39: Cylinder head bolt washer (16)
16663-40	9-40B	Front cylinder head	1937 to 1946--74" & 80" side valves
16665-40	10-40B	Rear cylinder head	1937 to 1946--74" & 80" side valves
16666-40	10-40C	Rear cylinder head	1937 to 1948-74" & 80" side valves
16667-36	9-36C	Front cylinder head, low compression (marked 10.5)	1936 to 1948--74" & 80" side valves
16667-40	9-40C	Front cylinder head	1937 to 1948-74" & 80" side valves
1667-32	30367-32	Negative brush holder screw nut	1932 to 1950
16670-36	9-36D	Front cylinder head, medium compression (marked 9.3)	1936 to 1948--74" & 80" side valves
16673-36	10-36D	Rear cylinder head, medium compression (marked 9.3)	1936 to 1948--74" & 80" side valves
16676-36	9-36E	Front cylinder head, high compression (marked 8.2)	1936 to 1948--74" & 80" side valves
16679-36	10-36E	Rear cylinder head, high compression (marked 8.2)	1936 to 1948--74" & 80" side valves
16680-36	10-36C	Rear cylinder head, low compression (marked 10.5)	--1936 to 1948--74" side valves
16681-39	9-39	Front cylinder head (marked 6.1) aluminum	1940 to 1946 WLD, 1947 to 1952 -- 45"
16683-39	10-39	Rear cylinder head (marked 6.1) aluminum	1940 to 1946 WLD, 1947 to 1952 45"
1669-32	30450-32	Large brush and spring	1932 to 1950
1669-32A	30425-32	Brush set	1932 to 1948
		Part 1669-32A (Brush set) consists of:
		1669-32: Large brush and spring
		1671-26: Small brush and spring
16692-36	9-36	Front cylinder head (marked 5.5), iron	1936 to 1950 G, W & WL
16692-40	9-40M	Front cylinder head, aluminium	1940 to 1943 WLA & WLC; some 1945 & 1946 WL
16692-51	9-51	Front,cylinder head (marked 5.5) iron	1951 & 1952--45" twin, 1953 & 1954--Servi-Cars
16692-55		Front cylinder head (marked 5.5) iron	1956 & 1957--Servi-Cars
16695-36	10-36	Rear cylinder head (marked 5.5), iron	1936 to 1950 G, W & WL