Confirm this item fits

Add your vehicle to make sure this item fits and qualifies for free returns.

ROUSH Aero Splitter Kit - 2013-2014 Mustang, Manual and Automatic Transmission,

Part # 421405 | FREE SHIPPING | 30 DAY RETURNS
US $166.16
as low as $28.83/mo with
Condition:
New
2 available
Breathe easy. Free shipping and returns.
Shipping:
Free FedEx Ground / FedEx Home Delivery®.
Located in: Arlington, Texas, United States
Delivery:
Estimated between Sat, Oct 25 and Wed, Oct 29 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Seller pays for return shipping.
Payments:
       .
*No Interest if paid in full in 6 months on $149+. See terms and apply now- for PayPal Credit, opens in a new window or tab
Earn up to 5x points when you use your eBay Mastercard®. Learn moreabout earning points with eBay Mastercard

Shop with confidence

eBay Money Back Guarantee
Get the item you ordered or your money back. Learn moreeBay Money Back Guarantee - opens new window or tab
Seller assumes all responsibility for this listing.
eBay item number:405386854932
Last updated on Sep 19, 2025 00:45:29 PDTView all revisionsView all revisions

Compatibility

This part is compatible with 10 vehicle(s)
YearMakeModelTrimEngineNotes
2014FordMustangBase Convertible 2-Door3.7L 3726CC 227Cu. In. V6 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2014FordMustangBase Coupe 2-Door3.7L 3726CC 227Cu. In. V6 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2014FordMustangGT Convertible 2-Door5.0L 4951CC 302Cu. In. V8 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2014FordMustangGT Coupe 2-Door5.0L 4951CC 302Cu. In. V8 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2014FordMustangST Coupe 2-Door3.7L 3726CC 227Cu. In. V6 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2013FordMustangBase Convertible 2-Door3.7L 3726CC 227Cu. In. V6 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2013FordMustangBase Coupe 2-Door3.7L 3726CC 227Cu. In. V6 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2013FordMustangBoss 302 Coupe 2-Door5.0L 4951CC 302Cu. In. V8 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2013FordMustangGT Convertible 2-Door5.0L 4951CC 302Cu. In. V8 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
2013FordMustangGT Coupe 2-Door5.0L 4951CC 302Cu. In. V8 GAS DOHC Naturally AspiratedRWD, ROUSH Performance, Rear, Quantity needed per vehicle: 1
Portions of the information contained in this table have been provided by customautoparts

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Materials Sourced From
United States
Manufacturer Warranty
1 Year
Brand
Roush Performance
Manufacturer Part Number
421405
California Proposition 65
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Install Time
45 Minutes
Product Category Type
Fascia
Title
ROUSH 2013-2014 Ford Mustang - Rear Side Splitter Kit
UPC
844764004450
Category

Item description from the seller

About this seller

customautoparts

94.4% positive feedback17K items sold

Joined Sep 2005
Custom Auto Parts is dedicated to providing you the best possible experience when shopping for automotive parts. Need advice on which exhaust system to purchase? Having trouble deciding on whether to ...
See more

Detailed seller ratings

Average for the last 12 months
Accurate description
4.8
Reasonable shipping cost
5.0
Shipping speed
4.9
Communication
4.9

Seller feedback (3,203)

All ratingsselected
Positive
Neutral
Negative
  • i***3 (49)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Overall satisfied with the service. Only wished the tracking information was updated quicker. Having paid for the item and no update on its shipping status, was ready to cancel the order. Shipping said it was through FedEx on eBay, but once the tracking number was uploaded, it was through UPS. Not complaining since it was free shipping but if i had paid for it, id ask questions.
  • i***6 (1175)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    The seller reached out prior to sending the item letting me know that there was a second part that needed to be ordered for me to use. They helped me locate the correct part for my vehicle and at a great price. Awesome seller will definitely do business again. 
  • i***u (251)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Item was exactly as described, took about 4 days to get here and the price of the item was 50% cheaper than everyone else. 100% recommended this seller. Thanks again

Product ratings and reviews

5.0
1 product ratings
  • 1 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Most relevant reviews

  • 2013-2014 Mustang Roush

    thanks!

    Verified purchase: YesCondition: NewSold by: yatesperformance