SKU: 83424019638

JBA Exhaust Headers for Chevy GMC Blazer S10 Blazer S10 4.3L V6 - 1840S-4

Sale price$338.74 Regular price$376.38
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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

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Description

JBA Exhaust Headers for Chevy GMC Blazer S10 Blazer S10 4.3L V6 - 1840S-4Overview: 02 03 GM S Truck Cat4Ward 4. 3L Raw 409 JBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainless steel to endure the abuse of racing, towing, and daily driving built to withstand it all. JBAs

Overview:

02-03 GM S Truck Cat4Ward® 4.3L Raw 409

JBA shorty headers are one of the foremost performance upgrades you can bestow upon your beloved car, truck, or SUV. JBA Headers are significantly less restrictive than stock manifolds and dramatically increase the power and efficiency of your engine. Each header is constructed from durable stainless steel to endure the abuse of racing, towing, and daily driving – built to withstand it all. JBA’s proprietary Firecone collector design uses race proven technology for producing maximum power and torque gains where you drive most. Each system includes factory style emission connections and high-quality hardware for a professional no-leak installation.

Features:

  • Mandrel bent stainless steel tube
  • Proprietary JBA Firecone collector
  • Factory style emission connections
  • Extra thick collector domes
  • 3/8" thick machined flanges with Oversized exhaust ports
  • Specs:

  • Brand: JBA Performance
  • California Proposition 65: WARNING: This product can expose you to chemicals including chromium, which is know to the State of California to cause cancer or birth defects of other reproductive harm. For more information, visit www.p65warnings.ca.gov
  • CARB EO #: D-57-48
  • Catalytic Converter(s) Included: No
  • Collector Diameter: 2.5
  • Collector Port Diameter: 2.5
  • Collector Reducers Included: No
  • Color: Grey
  • Design: Shorty
  • Finish: Uncoated
  • Flange Thickness: 46089
  • Gasket Or Seal Included: Yes
  • Gaskets Included: Yes
  • Grade Type: Performance
  • Header Material: 409 Stainless Steel
  • Header Style: Shorty
  • Mounting Hardware Included: Yes
  • Oxygen Sensor Port: Yes
  • Primary Tube Outside Diameter: 1.625
  • Primary Tubing Diameter: 1.625
  • Sheen Level: Matte
  • Tube Wall Thickness: 0.059
  • Part Number: 1840S-4
  • Emissions:

    • 1 - This product has been granted a California Air Resources Board (CARB) Executive Order (EO Number) Exemption. It is 50 State Legal when installed on the Specified vehicle per the Manufacturer’s Current Application Guide, the CARB EO, and Installation Instructions.

    Instructions:

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 83424019638

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    Pat
    Chelsea, US
    ★★★★★ 5
    work well
    Color: Light
    I recently switched to this mineral sunscreen after having irritation and redness from several chemical sunscreens, and it has made a big difference for me. My skin is sensitive, but this one feels gentle and comfortable without causing burning or itching. It gives me good protection and doesn’t leave my skin feeling worse by the end of the day. Definitely a better option for sensitive skin.
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    Reviewed in the United States on May 27, 2026
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    Michelle Oberfeldt
    Birmingham, US
    ★★★★★ 5
    Glowy SPF skin tint, Great skin-like coverage
    Color: Medium
    I’ve tried a lot of skin tints and this one actually surprised me. The Colorescience Flex Shield gives that “your skin but healthier” look without feeling heavy or greasy. I love that it starts white and adjusts to your skin tone — it blends in really naturally and evens everything out without looking makeup-y. The finish is glowy but still skin-like, and knowing I’m getting SPF protection at the same time makes it perfect for everyday wear. On busy days this has honestly replaced my foundation.
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    Reviewed in the United States on May 25, 2026
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    fatima
    Belleville, US
    ★★★★★ 5
    OBSESSED - My New Go-To SPF ✨
    Color: Glow
    I don’t say this lightly - I’m OBSESSED. The Colorescience Glow SPF is hands down the best sunscreen I’ve ever used. This formula makes my skin look unreal - plumped, radiant, and healthy from morning to night. It gives that lit-from-within glow without ever looking greasy or heavy. I’m super sensitive to sunscreens (most of them irritate my skin and eyes), but this one is perfection. No reactions, no discomfort- just smooth, glowing skin all day. I also ordered the Flex and can’t wait to try it next. This is officially my forever SPF
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    Reviewed in the United States on April 18, 2026
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    Robert Salas
    Fort Morgan, US
    ★★★★★ 5
    Best Sunblock ever!!
    Color: Bronze
    I kept seeing this all over my social media, so I decided to do some research before purchasing. I was pleased at how high the reviews were. I decided to purchase and I’m totally obsessed! I’ve been using for a few months now and I don’t even wear any foundation anymore. This has literally replaced it. I love how it glides on like butter, and how It’s so smooth and light. I get so many compliments on my face. Best sunblock ever!! I’m forever a customer! Highly recommended!!
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    Reviewed in the United States on May 8, 2026
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    ladybossplanner
    Charlottesville, US
    ★★★★★ 5
    Bronze and Matte are brown girl friendly
    Color: Bronze, Color: Bronze
    TLDR: I got bronze and matte formulas and I have oily skin. I’m very happy with these. Bronze is a perfect match until it oxidizes so I mix it with medium for the perfect shade. Bronze will be flexible across a wide range of skin tones. Matte formula is perfect on its own, more like a satin matte finish. I think matte has less pigment than bronze. Both are easy to apply and reapply, blends nicely, zero white cast- no Casper. What I liked: I really like the finish on these. I have oily skin and these work well for me. They don’t burn my eyes. Bronze gives a little glow while matte tones down the shine but it’s not too matte, more like satin matte. I can wear matte on its own but I have to mix bronze with medium because it oxidizes after a few minutes. These are both great options for daily wear. What could be better: I wouldn’t change anything about the matte formula. But it can get thick after several reapplications. I wish the bronze formula didn’t oxidize. While it doesn’t oxidize every time, you just never know when it will. But mixing it with medium helps to keep it chill. Skin tone: For reference, I usually have to mix shades to get my perfect match. But my skin tone tans very easily and is lighter in winter, darker in summer. So I mix medium with bronze or tan. Some of my foundation colors if it helps you: Armani 7.8, Hourglass 11, EL DW 4N2, MUFE 3N42, NARS Aruba, Dior 4N, Haus Labs 330. Would I recommend: Yes! This is best for brown girls who want a tinted sunscreen without a white cast. And it’s even for lighter people who want to bronze up their skin. About my photos/video: Photos show me wearing each formula as well as swatches. Hope this helps!
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    Reviewed in the United States on July 14, 2025

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