Engine Block - Front View

WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Block Thread Specifications - Front View

Courtesy of GENERAL MOTORS CORP.

Service Call Out	Thread Size	Insert	Drill	Counterbore Tool	Tap	Driver	Drill Depth (Maximum)		Tap Depth (Maximum)
J 42385-							MM	(IN)	MM	(IN)
1	M10 x 1.5	215	211	212	213	214	24.5	0.96	19.5	0.77
2	M8 x 1.25	210	206	207	208	209	23.5	0.93	18.5	0.73
3	M12 x 1.75	855	856	857	858	859	33.5	1.32	26.5	1.04
4	M8 x 1.25	210	206	207	208	209	23.5	0.93	18.5	0.73
5	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
6	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
7	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
8	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
9	M8 x 1.25	210	206	207	208	209	25.5	1.00	THRU
10	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
11	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
12	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
13	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
14	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
15	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
16	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
17	M6 x 1	205	201	202	203	204	20	0.787	16	0.63
18	M8 x 1.25	210	206	207	208	209	23.5	0.93	18.5	0.73
19	M8 x 1.25	210	206	207	208	209	55	2.17	THRU
20	M8 x 1.25	210	206	207	208	209	23.5	0.93	18.5	0.73
21	M12 x 1.75	855	856	857	858	859	33.5	1.32	26.5	1.04
22	M12 x 1.75	855	856	857	858	859	33.5	1.32	26.5	1.04