Power Steering Gear Box Adapter fittings

David.C

David.C

Greasemonkey
Sep 6, 2012
158
63
Does anybody have any idea what sizes I'm looking for? I really don't want to buy 10 trying to figure it out. 1978 Malibu original gear box. See link below. Thanks


 
David.C

David.C

Greasemonkey
Sep 6, 2012
158
63
i replaced one of my adaptor fittings a few months ago and it was russell 648060.it's a -6x(m16x1.5)
Was that the high-side? smaller one closest to the steering shaft?
 
melloelky

melloelky

Royal Smart Person
Oct 22, 2017
1,398
113
mass
i replaced one of my adapter fittings a few months ago and it was Russell 648060.it's a -6x(m16x1.5)
i realized my box was later model than your 1978.mine is metric as in 1980 GM changed from its original 45-degree inverted flare 5/8×18 UF and 11/16×18 UNS female fitting sizes to a metric O-ring (often called Saginaw fittings) measuring 16×1.5 mm and 18×1.5 mm. it was the smaller of the two closest to the steering shaft.
 
Last edited:
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David.C

David.C

Greasemonkey
Sep 6, 2012
158
63
i replaced one of my adaptor fittings a few months ago and it was russell 648060.it's a -6x(m16x1.5)
Was that the high-side? smaller one closest to the steering shaft?
 
pagrunt

pagrunt

Comic Book Super Hero
Sep 14, 2014
4,487
113
Elderton, Pa
Are you going to make both hi & low pressure lines & just the low side?
 
79 USA 1

79 USA 1

Master Mechanic
Sep 2, 2011
467
93
Cheektowaga, New York
One side is 11/16-18 and as stated 5/8-18 on the other.
Worked with them many times at a past job.
 
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