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Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.

Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.

Universal Fit, 4.75" Tube Length, 4.00" Inside Diameter Big End, Steel, Natural

9 Reviews | 1 Answered Question
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Lincoln, NE -
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Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
X
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
Exhaust Reducer, 4 Inch I.D. to 3-1/2 Inch O.D.
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Part # 9174035
$8.99
each
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Details
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  • Universal Fit
  • 4-3/4" tube length
  • Steel construction
  • 4" big end I.D.
  • 3-1/2" small end O.D.

Details

MFG. Part #:
9174035
Tube Length:
4.75"
Inside Diameter Big End:
4.00"
Outside Diameter Small End:
3.50"
Material Type:
Steel
Finish:
Natural
Sold in Quantity:
Each
Notes:
Expanded length is 1.75"

Info

Mild steel exhaust reducer to repair or build your own. 

  • 4-1/2” overall length
  • Swedge for the reduction occurs midway at 2-1/4”

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Reviews

Q & A

Videos & Articles
  • Follow these tips and tricks on how to properly wrap your exhaust manifolds to reduce underhood temperatures.
  • Product guru Jeff K. doesn't just limit his revival tendencies to those of the four wheeled variety. He also likes to leave his mark on motorcycles, giving new life to tired old two-wheelers. Follow along as he tackles a 2004 Kawasaki Vulcan.
  • What size header should I use? Short or long tube headers? Learn how to answer these exhaust questions and choose the right header with our expert guide.

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