Description

Collector Reducer – 3 in Inlet to 2.5 in Outlet – 3-Bolt Flange – Steel – Aluminized – Pair

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About TRANS-DAPT

Trans-Dapt offers a wide range of custom engine components to boost both the performance and style of many vehicles. Their product line includes oil pans, oil filter relocation kits, valve covers, custom air cleaners, throttle body spacers, dress-up kits, and much more.

International Shipping

Below are estimated rates and delivery times for popular destinations; full carrier options are available at checkout.

Our dedicated team has years of experience managing international logistics and customs documentation to ensure smooth delivery from our US warehouse to your door. Please review our shipping policy and local import regulations before ordering.

Loading international estimates...

Reviews

There are no reviews yet.

Be the first to review “TRANS-DAPT 3in Header Reducers 9374”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    CORSA PERFORMANCE Cat Back Exhaust System 21141

    SKU: COR21141
    Product information
    Details...
    Original price was: $1,375.00.Current price is: $1,249.99.Add to cart
    Original price was: $1,375.00.Current price is: $1,249.99.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PROFORM HEI Distributor – Chevy Inline 6 67081

    SKU: PFM67081
    Product information
    • Weight6.62 lbs
    • Dimensions16.9 × 8.2 × 7.1 in
    • Product Line

      Street/Strip

    • Trigger Style

      Magnetic

    • Advance Type

      Vacuum

    • Cap Style

      Male

    • Cap Color

      Red

    Details...
    Original price was: $285.43.Current price is: $259.48.Add to cart
    Original price was: $285.43.Current price is: $259.48.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    PROFORGED Pitman Arm 103-10048

    SKU: PFG103-10048
    Product information
    • Weight3.15 lbs
    • Dimensions11.2 × 4.5 × 2.45 in
    • Quantity

      Each

    • Center To Center Length

      5 in

    • Material

      Steel

    • Color

      Black

    • Finish

      Paint

    Details...
    Original price was: $87.34.Current price is: $75.95.Add to cart
    Original price was: $87.34.Current price is: $75.95.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MPD RACING Midget Birdcage Bearing Angular Contact MPD20120

    SKU: MPD20120
    Product information
    • Weight1.68 lbs
    • Dimensions6 × 4.55 × 1.95 in
    • Material

      Steel

    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Each

    • Bearing Style

      Angular Contact

    Details...
    Original price was: $65.54.Current price is: $56.99.Add to cart
    Original price was: $65.54.Current price is: $56.99.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SEALED POWER Moly Piston Ring Set E299K60

    SKU: SEAE299K60
    Product information
    • Weight1.15 lbs
    • Dimensions5.1 × 5 × 3 in
    • Product Line

      Performance

    • Bore (Standard)

      4.180 in

    • Bore (Metric)

      106.172 mm

    • Tension

      Standard

    • Top Ring Included

      Yes

    Details...
    Original price was: $86.91.Current price is: $79.01.Add to cart
    Original price was: $86.91.Current price is: $79.01.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOWE Centerlink Adjustable Chevelle 233973

    SKU: HOW233973
    Product information
    • Weight5.55 lbs
    • Dimensions27 × 5.75 × 3.5 in
    • Quantity

      Each

    • Greaseable

      Yes

    • Material

      Steel

    • Color

      Black

    • Finish

      Paint

    Details...
    Original price was: $285.00.Current price is: $259.09.Add to cart
    Original price was: $285.00.Current price is: $259.09.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WESTIN Step Bars Mounting Kit 27-2145

    SKU: WES27-2145
    Product information
    • Weight16.75 lbs
    • Dimensions14.3 × 10.5 × 3.7 in
    • Application Specific

      Yes

    • Driver / Passenger Side

      Drive / Passenger Side

    • Mounting Location

      Rocker Panel

    • Hardware Included

      Yes

    • Material

      Steel

    Details...
    Original price was: $150.04.Current price is: $136.40.Add to cart
    Original price was: $150.04.Current price is: $136.40.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    ZAMP Suit Single Layer Black Medium R010003M

    SKU: ZAMR010003M
    Product information
    • Weight2.28 lbs
    • Dimensions15.4 × 13.05 × 4.1 in
    • Product Line

      ZR 10

    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      Driving Suit83

    • Variant Column

      Size

    Details...
    Original price was: $142.60.Current price is: $129.64.Add to cart
    Original price was: $142.60.Current price is: $129.64.Add to wishlist
  • Add to wishlist
    Sale
    ATI PERFORMANCE SBF Timing Pointer C Timing Tab 918949
    Add to wishlist

    ATI PERFORMANCE SBF Timing Pointer C Timing Tab 918949

    SKU: ATI918949
    Product information
    • Weight0.44 lbs
    • Dimensions4.15 × 3.4 × 1.6 in
    • Color

      Black

    • Finish

      Anodized

    • Quantity

      Each

    • Variant

      Yes

    • Variant Group

      TimingPointers2

    Details...
    Original price was: $57.79.Current price is: $50.25.Add to cart
    Original price was: $57.79.Current price is: $50.25.Add to wishlist
  • Add to wishlist
    Sale
    ALLSTAR PERFORMANCE Upper A-Arm Bushing ALL56242
    Add to wishlist

    ALLSTAR PERFORMANCE Upper A-Arm Bushing ALL56242

    SKU: ALL56242
    Product information
    • Weight0.695 lbs
    • Dimensions7.05 × 4 × 1.8 in
    • Quantity

      Each

    • Upper / Lower Position

      Upper

    • Front / Rear Position

      Front

    • Greaseable

      Yes

    • Outside Diameter A

      1.394 in

    Details...
    Original price was: $18.00.Current price is: $15.49.Add to cart
    Original price was: $18.00.Current price is: $15.49.
    Quantity Only 5 left in stock!
    -+
    Add to cart
    Add to wishlist

    12