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Exterior Components› Body Panels and Components

Stillen

Polyurethane Rear Diffuser

Name: Polyurethane Rear Diffuser
Brand: Stillen
SKU: KB13145

$303.23

SKU: KB13145

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Beginner — under 30 min

Overview

The STILLEN rear diffuser is a body styling part designed for the 2013-2015 Nissan Altima. It is constructed from durable polyurethane and comes unpainted, ready for custom paint application. The diffuser includes pre-installed 3M automotive tape for installation.

Installation is straightforward, requiring no cutting or modification to the bumper, and the part is removable. The product is backed by a Limited Lifetime Warranty.

Show original supplier description

The STILLEN Rear Diffuser is a custom body styling component engineered specifically for the 2013-2015 Nissan Altima. Crafted from a proprietary, resilient polyurethane formula, this rear diffuser is built for durability and is ready for prep and paint to match your desired finish. It comes with pre-installed 3M automotive tape, simplifying the installation process. The design ensures a no-cut, no-modification installation, and the diffuser is removable, offering flexibility. This commitment to quality is further underscored by a Limited Lifetime Warranty on materials, providing peace of mind for the owner. Proper preparation and careful installation are recommended to ensure the longevity and secure fitment of the part.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Available on iOS & Android

Specifications

Brand	Stillen
Part Number	KB13145
Category	Exterior Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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