351w part identification

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Apr 12, 2026 | 11:24 PM

lipliptargus

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4wd Low

Joined: Jun 2025

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351w part identification

Can anyone tell me what this tube is called?
the one with the holes. This is on the back side of a 1995 F250 with a 351w.

Apr 13, 2026 | 12:37 AM

85e150

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Air injection manifold. Smog pump pumps into it and it connects to the cylinder head which distributes the air to the exhaust.

Apr 13, 2026 | 05:24 AM

JJF20

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From: Northern Ontario

It is part of the Thermactor system, if looking for the technical name.

Apr 13, 2026 | 07:09 AM

rla2005

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From: Kentucky

Standard Motor Products AT129

Apr 13, 2026 | 12:57 PM

lipliptargus

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4wd Low

Joined: Jun 2025

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Awesome! thanks guys

Apr 22, 2026 | 07:13 PM

TobyB

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Joined: Oct 2014

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From: Carnation, Wah

yeah, mine did that, too.

And of course, the ends are rusted solidly into the head.

It's not much fun to get to, is it?

t

Apr 22, 2026 | 08:05 PM

cougrrcj

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Joined: Jul 2009

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From: NE Ohio

FWIW, if anyone needs one of those factory 'across the rear of the engine' 351W AIR tubes, I have one that I'll never use (I had bought it for my 351W-based stroker, but never needed). NOS, never used. PM me. $20 + actual shipping and it is yours!

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351w

Louiesant

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Apr 14, 2025 05:49 PM

6R80 behind a 351W

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Feb 10, 2023 10:50 AM

Whoa!! 351w is really a 352w.....

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351W??

lghtnin351

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Oct 16, 2001 10:04 AM

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