1. Manifolds & Headers Offered
  2. sku: 7185908814598622
  3. ULTIMATE UL105FU70LL138

ULTIMATE UL105FU70LL138 Tube Exhaust Headers Kit Silverado/sierra 4.8L/5.3L/6L

fits model: Silverado, Sierra. make: Chevy, Gmc. year: 1999–2006.

Ul105fu70ll138 Ultimate For 99-06 Chevy Gmc Silverado/sierra 4.8l/5.3l/6l Long Tube Exhaust Headers Kit

( Brand: Ultimate ), ( Part Type: Tube Exhaust Header ), ( Manufacturer Part Number: UL105FU70LL138 ), ( Manufacturer Warranty: 1 Year ), ( Placement On Vehicle: Front ), ( Inlet Size: 1.75 ), ( Outlet Size: 3.0 ), ( Fitment Type: Performance/custom ), ( Materials: T-304 Full Stainless Steel ), ( Surface Finish: Chrome Polished ), ( Color: Metallic ), ( Header Inlet / Outlet Size: In ), ( Notes: Does Not Fit 4wd ), ( Mounting Style: Clamp-on ), ( Mounting Hardware Included: Yes )

Review ULTIMATE Chevy Gmc Silverado/sierra 4.8l/5.3l/6l Long Tube Exhaust Headers Kit fits SILVERADO SIERRA 1999–2006

Introducing the Ultimate Ul105FU70LL138 Exhaust Headers Kit, meticulously designed for 99-06 Chevy Silverado and GMC Sierra vehicles equipped with 4.8L, 5.3L, or 6.0L engines. This superior exhaust headers kit is a must-have for enthusiasts seeking optimal engine performance and a more powerful exhaust system.

Manufactured using top-shelf materials, the Ul105FU70LL138 headers are crafted from high-strength, stainless steel. The use of stainless steel guarantees resistance to corrosion, ensuring a long-lasting and durable solution for your vehicle. Each header is meticulously engineered to provide maximum flow and efficiency, allowing for improved fuel economy and increased horsepower.

The Ultimate Ul105FU70LL138 headers feature a 1 5/8-inch primary tube diameter, which is larger than the factory exhaust system. This design modification results in smoother exhaust flow and a more pronounced exhaust note. Additionally, the headers come with 3/8-inch collector pipes, which connect to the catalytic converters, and 1 3/4-inch exhaust pipes, ensuring a seamless integration with your factory or aftermarket exhaust system.

This exhaust headers kit is a direct bolt-on design, meaning that it requires minimal modifications to install. The headers are designed to fit perfectly with the factory exhaust manifolds, making installation a straightforward process for most DIY enthusiasts. Furthermore, the kit includes all necessary hardware, gaskets, and instructions to facilitate a hassle-free installation.

Upgrading your exhaust system with the Ultimate Ul105FU70LL138 headers not only improves performance but also enhances the visual appeal of your vehicle. The polished stainless steel finish adds a touch of sophistication and distinction, making your Chevy Silverado or GMC Sierra stand out from the crowd.

In summary, the Ultimate Ul105FU70LL138 Exhaust Headers Kit is an exceptional upgrade for 99-06 Chevy Silverado and GMC Sierra vehicles powered by 4.8L, 5.3L, or 6.0L engines. This kit offers improved performance, durability, and a more aggressive exhaust note, all while maintaining a straightforward installation process. Upgrade your vehicle today and experience the difference that Ultimate headers can bring!

Pros and Cons of Buying ULP105FU70LL138 Exhaust Headers for 99-06 Chevy Silverado/Sierra 4.8L/5.3L/6.0L

1. Pros:

a. Performance: Upgrading to a high-performance exhaust header system like ULP105FU70LL138 can help improve engine performance by reducing exhaust gas backpressure and enhancing the flow of exhaust gases.

b. Durability: These headers are designed using high-quality stainless steel, ensuring long-lasting performance and resistance to rust and corrosion.

c. Improved Fuel Economy: By allowing for better exhaust flow, these headers can help improve fuel economy by ensuring that the engine is operating more efficiently.

d. Thermal Efficiency: The headers' design allows for optimal heat management, which can help improve engine performance and overall efficiency.

2. Cons:

a. Cost: Aftermarket exhaust headers can be quite expensive, and the ULP105FU70LL138 headers are no exception.

b. Installation Complexity: Installing aftermarket headers can be a complex and time-consuming process, especially for those without experience in exhaust system modifications.

c. Potential for Leaks: Improper installation or damage to the headers may result in exhaust leaks, which can lead to reduced performance and potential safety hazards.

3. Conclusion:

The ULP105FU70LL138 exhaust headers offer several performance benefits, including improved engine performance, increased durability, enhanced fuel economy, and optimized thermal efficiency. However, these benefits come at a cost, both financially and in terms of installation complexity. Additionally, there is a risk of exhaust leaks if the headers are not installed properly.

4. Recommendation:

If you are looking to significantly improve the performance of your 99-06 Chevy Silverado/Sierra 4.8L/5.3L/6.0L engine, installing the ULP105FU70LL138 exhaust headers may be a worthwhile investment. However, it is essential to consider the potential costs, installation complexity, and risks before making a purchase. If you are not confident in your ability to install the headers yourself, it may be best to hire a professional exhaust system specialist to ensure proper installation and minimize the risk of leaks.

part # ul105fu70ll138 prices

  • $220.08-$220.73

specifications maniheader:

  • for models: Silverado, Sierra
  • for makes: Chevy, Gmc
  • for years: 1999-2006
  • brand: Ultimate
  • part type: Tube Exhaust Header
  • manufacturer part number: UL105FU70LL138
  • manufacturer warranty: 1 Year
  • placement on vehicle: Front
  • inlet size: 1.75
  • outlet size: 3.0
  • fitment type: Performance/custom
  • materials: T-304 Full Stainless Steel
  • surface finish: Chrome Polished
  • color: Metallic
  • header inlet / outlet size: In
  • notes: Does Not Fit 4wd
  • mounting style: Clamp-on
  • mounting hardware included: Yes

offer maniheader:

  • quantity: 5
  • availability: In Stock
  • sold: 0
  • started: July 30, 2025
  • options: Ship-to-home

general maniheader:

  • Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
  • condition: New

shipping maniheader:

  • service: FedEx Ground Economy
  • carrier: FedEx
  • type: Fixed
  • transit: 3-7 Days
  • cost: $0.00
  • class: Economy

seller maniheader:

  • # reviews: 2694
  • rating: 99.1%

payments maniheader:

  • other
  • credit card: Discover
  • wallet: Paypal

returns maniheader:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: silverado, sierra, for makes: chevy, gmc, for years: 1999-2006, part type: tube exhaust header, manufacturer warranty: 1 year, placement on vehicle: front, inlet size: 1.75, outlet size: 3.0, fitment type: performance/custom, materials: t-304 full stainless steel, surface finish: chrome polished, header inlet / outlet size: in, notes: does not fit 4wd, mounting style: clamp-on, mounting hardware included: yes,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: metallic, sku: 7185908814598622,

Ultimate UL105FU70LL138 Is Similar To:

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2 offers $220.08–$220.73 USD
  • Offer #1: $220.73 price + free delivery = $220.73* total. Specifics and Features: Header Inlet / Outlet Size (IN):1.75"/3.0"(Error range:0.1-0.2inch) Bolt-on installation Made of T-304 stainless steel 2 x 4-1 manifolds connecting into a 3" Y-pipe . Fitment: For 1999-2006 CHEVY/GMC GMT800 SILVERADO/SIERRA 1500 SUV (2WD) 4.8L/5.3L/6L.FREE SHIPPING
  • Offer #2: $220.08 price + free delivery = $220.08* total. Specifics and Features: Header Inlet / Outlet Size (IN):1.75"/3.0"(Error range:0.1-0.2inch) Bolt-on installation Made of T-304 stainless steel 2 x 4-1 manifolds connecting into a 3" Y-pipe Made of 3/8 " laser cutting plate with chrome plated surface for corrosion prevention; All joints TIG welded for resistance against cracking and wearing; . Fitment: For 1999-2006 CHEVY/GMC GMT800 SILVERADO/SIERRA 1500 If using a larger 4L80E transmission the bellhousing ears may need to be trimmed for proper clearance.FREE SHIPPING