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Oil filter boss bolts?

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Old

May 30, 2003 | 02:28 PM

#1

Thread Starter

Supreme Member

Joined: Jul 1999

Posts: 1,817

Likes: 1

From: Plano, TX

Car: 1992 RS

Engine: 406 Stealth Ram

Transmission: 700R4

Oil filter boss bolts?

Anyone know what size bolts I need to hold in the oil filter boss (the part the oil filter screws onto)? Thanks!

Old

May 30, 2003 | 02:34 PM

#2

TGO Supporter

Joined: Aug 1999

Posts: 14,811

Likes: 1

From: Jackson County

1/4-20, not sure of the length

Old

May 30, 2003 | 02:46 PM

#3

Thread Starter

Supreme Member

Joined: Jul 1999

Posts: 1,817

Likes: 1

From: Plano, TX

Car: 1992 RS

Engine: 406 Stealth Ram

Transmission: 700R4

Thanks! Should I buy black oxide or any type of special coating on the bolts? Any lock washers required at all? My engine was dissassembled years ago and I've since lost the bolts for it, and dont remember anything about them.

Old

May 30, 2003 | 06:49 PM

#4

Supreme Member

Joined: Jul 1999

Posts: 18,457

Likes: 16

From: Loveland, OH, US

Car: 4

Engine: 6

Transmission: 5

I think they're about 1". Factory ones have a washer head IIRC. No special treatment as far as plating or any of that is needed; after all, they're immersed in oil 100% of the time. If you use regular bolts, use flat washers with them.

Old

May 30, 2003 | 07:01 PM

#5

Thread Starter

Supreme Member

Joined: Jul 1999

Posts: 1,817

Likes: 1

From: Plano, TX

Car: 1992 RS

Engine: 406 Stealth Ram

Transmission: 700R4

Yea, I figured that since they were in oil, any decent bolt would be fine. Thanks for the info guys!

Old

May 30, 2003 | 07:16 PM

#6

Member

Joined: Mar 2002

Posts: 266

Likes: 0

From: Coushatta LA

If you want the OEM bolts, 3951644 is the GM part #. $0.95 each

Old

Jun 1, 2003 | 08:57 PM

#7

Thread Starter

Supreme Member

Joined: Jul 1999

Posts: 1,817

Likes: 1

From: Plano, TX

Car: 1992 RS

Engine: 406 Stealth Ram

Transmission: 700R4

Thanks! Is there any kind of gasket that goes between the boss and the block?

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