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Dynomax Exhaust Pipe 4 Inch Inlet ID 3 Inch Outlet OD

Part # 55512
1 year warranty
(146 reviews)
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Product Information

Product Details
Part No. 55512
Warranty Details (1 Year Warranty)
Made from quality materials for durability, DynoMax pipe is manufactured with precision benders and fixture checked to ensure a precise fit for quick and easy installation.

Product Features:
    Specifications
    Bend Type:
    Mandrel

    Clamps Included:
    No

    Finish:
    Natural

    Grade Type:
    Performance

    Inlet Inside Diameter:
    4.000 in

    Length:
    56.625 in

    Material:
    Stainless Steel

    Outlet Outside Diameter:
    3.000 in

    Shape:
    Straight
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    4.25 out of 5
    146 Customer Reviews
    5 Stars
    93
    4 Stars
    26
    3 Stars
    9
    2 Stars
    6
    1 Star
    12
    Missing studs not a direct fitMissing studs not a direct fit
    80% would recommend to a friend
    31
    Easy To Install
    7
    Lightweight
    3
    Great Sound
    3
    Increases Power
    2
    Cheap
    6
    None
    1
    Difficult To Install
    1
    No Increase In Performance
    1
    Everything Else
    1
    Bad Welding
    23
    Everyday Driving
    21
    Replacement
    6
    Restoration
    2
    Performance Driving
    1
    Racing
    5
    Truck Enthusiast
    4
    Casual Driver
    2
    Auto Enthusiast
    2
    Mechanic
    1
    DIY-mechanic
    11
    Casual Driver
    10
    Auto Enthusiast
    8
    Mechanic
    4
    Truck Enthusiast
    1
    Competitive Driver
    Most Liked Positive Review
    better than BBK
    this was used to replace the pipe that came with a BBK true dual exhaust, which was not bent hi enough to clear axel no matter how it was angled. does not ship in a box so you better have a pipe expander to make it round again
    Most Liked Negative Review
    Junk not made right
    Not direct fit. The hanger was smaller diameter than the OEM. The hanger was not in the correct position. The pipe appeared to be smaller diameter than the original. The final bend was hitting the crossmember. Unless you have a lot a patients and a torch go get one custom made. It was too messed up to try and blame it on UPS beating it up during shipment. After an afternoon of messing around with it I got it to work.
    Very pleased with this part.
    I installed factory tubular exhaust manifolds from a late eighties 5.0 Mustang onto an older F150 302. Making up my own dual exhaust for the project appeared to be a problem, none of the local pipe benders could make up the ball flange to hook to the manifolds. I found a pair of these Walker 41726 adapters at Advance at a great price. The fit of the pipe ball flange is very good against the manifold. I would prefer for the flange connector that the bolts go through to be concave instead of flat, but this is not a big issue especially since I could not find any other options besides this part. Well made part at a great price and they were shipped quickly. I also ordered part number 548755 Nickson 45 degree pipes to make the direction back correct. Overall I am very happy with the parts, I will be able to make up a dual exhaust system for a fraction of what the muffler shops would charge.
    Bottom Line Yes, I would recommend to a friend
    Exhaust pipe
    Staff Reviewer -
    Went to muffler shop to have pieces bent and was told that the material was not aluminized as advertized. Also would not bent properly, material was too thin.
    Bottom Line No, I would not recommend to a friend
    You will need to for full replacement
    Staff Reviewer -
    You will need two of these for a full system replacement, one before the muffler and one after it.
    Bottom Line Yes, I would recommend to a friend
    Terrable welds don't buy nothing but a headache
    Worst in quality and I had to do the job twice because of this defective part. Don't buy and save yourself the headache.
    Bottom Line No, I would not recommend to a friend
    it takes 2
    Staff Reviewer -
    To replace the complete system you will need 2 of these with the other components and one will have to be cut to length.
    Bottom Line Yes, I would recommend to a friend
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