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Exhaust› Headers, Manifolds and Components

PPE Engineering

4-1 Stainless Steel Headers with 1 5/8" Runners

$1,877.65 $1,512.69 Save $364.96

SKU: 1143003-SS

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The PPE Engineering Lexus GS430/SC430 headers are a performance upgrade for your vehicle's exhaust system. These headers feature a 4-1 design with 1 5/8" runners and a 2.5" outlet, crafted from 100% 304 stainless steel.

They offer an estimated power gain of 18-20 wheel horsepower and over 20 ft-lb of torque. Installation is designed to be a direct bolt-on, fitting stock catalytic converters without requiring O2 sensor extensions. The product includes new outlet gaskets.
Show original supplier description
The PPE Engineering Lexus GS430/SC430 headers are engineered to enhance the exhaust system of your Lexus GS430 (2001-2005) and SC430 (2002-2005). This performance upgrade features a 4-1 header design, incorporating 1 5/8" diameter runners and a 2.5" collector outlet for improved exhaust flow. Constructed from premium 100% 304 stainless steel, these headers are built for durability and corrosion resistance. They are designed as a direct fit to the factory catalytic converters, ensuring a straightforward installation process that does not require O2 sensor extensions. The package includes new outlet gaskets for a complete setup. These headers are projected to deliver significant performance improvements, with an estimated gain of 18-20 wheel horsepower and over 20 ft-lb of torque. An optional ceramic coating is available, which helps reduce underhood temperatures and maintains the aesthetic appeal of the headers over time. The "Vehicle Specific" fitment specification ensures precise compatibility with the listed Lexus models.

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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Specifications

BrandPPE Engineering
Part Number1143003-SS
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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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