Engine Block - Right Side 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 - Right Side 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	M12 x 1.75	865	856	857	858	859	19.50	0.778	12.5	0.49
2	M12 x 1.75	865	856	857	858	859	19.50	0.778	12.5	0.49
3	M6 x 1.0	205	201	202	203	204	20.50	0.807	16.5	.065
4	M12 x 1.75	865	856	857	858	859	15.50	0.610	12.5	0.49
5	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.0	0.71
6	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.0	0.71
7	M8 x 1.25	210	206	207	208	209	23.50	0.925	18.0	0.71
8	M12 x 1.75	855	856	857	858	859	33.50	1.319	26.5	1.04
9	M8 x 1.25	210	206	207	208	209	30.50	1.201	22.5	0.89
10	M8 x 1.25	210	206	207	208	209	30.50	1.201	22.5	0.89
11	M8 x 1.25	210	206	207	208	209	30.50	1.201	22.5	0.89
12	M8 x 1.25	210	206	207	208	209	30.50	1.201	22.5	0.89
13	M8 x 1.25	210	206	207	208	209	30.50	1.201	22.5	0.89
14	M12 x 1.75	855	856	857	858	859	33.50	1.319	26.5	1.04
15	M12 x 1.75	865	856	857	858	859	19.50	0.778	12.5	0.49