1. Manifolds & Headers Offered
  2. sku: 9413388767979761
  3. OSBUYZONE 6401A-BK-JT

OSBUYZONE 6401A-BK-JT Block Tube Headers 66-87 V8

fits model: K10, C10, Blazer, Jimmy. make: Gmc, Chevy.

6401a-bk-jt Osbuyzone For Gmc Chevy K10 C10 Pickup Blazer Jimmy 66-87 Small Block V8 Long Tube Headers

( Brand: Osbuyzone ), ( Type: Exhaust Header ), ( Items Included: Gasket, Mounting Hardware ), ( Material: Stainless Steel ), ( Substrate Material: Steel ), ( Features: Coated ), ( Placement On Vehicle: Front ), ( Manufacturer Part Number: 6401A-BK-JT ), ( Oe/oem Part Number: Not Oem ), ( Color: Black ), ( Manufacturer Warranty: 1 Year ), ( Head Flange Thickness: 5/16 In. ), ( Primaries Diameter: 1-1/2 In. ), ( Pipe Thickness: 16-gauge ), ( Collector Diameter: 3 Inch ), ( Surface Finish: High Temperature Black Coating ), ( Fitment: For 60-87 Chevy/gmc Trucks And Suvs )

Review OSBUYZONE Gmc Chevy Pickup 66-87 Small Block V8 Long Tube Headers fits BLAZER JIMMY K10 C10

Introducing the OSBuyZone 6401A-BK-JT tube headers, a top-tier aftermarket solution for GMC and Chevy K10 and C10 Blazer and Jimmy models from 1966 to 1987 with a 6.6L or 7.4L V8 engine. These headers are an excellent choice for those seeking improved performance and enhanced aesthetics for their classic vehicles.

The OSBuyZone tube headers are meticulously constructed using 304 stainless steel, ensuring durability and resistance to corrosion. Each header tube is carefully designed to provide optimal flow for exhaust gases, maximizing engine efficiency and power output. The 1 5/8-inch primary tubes merge into a 3-inch collectors, which in turn connects to an integered 3-inch exhaust system for seamless transition and optimal performance.

These headers feature a stud-welded design, ensuring a secure and reliable fitment to the engine. The integrated gasket surface guarantees a leak-free seal, preventing any exhaust gases from escaping and maintaining optimal operating conditions. The headers also come equipped with oxygen sensor locations, ensuring compatibility with modern emissions systems.

Installing the OSBuyZone tube headers is a straightforward process, thanks to their bolt-on design. No extensive modifications are required, making them an ideal choice for both professional shops and DIY enthusiasts. The headers also come with all necessary hardware for installation, making the process even more convenient.

In summary, the OSBuyZone 6401A-BK-JT tube headers offer numerous benefits for GMC and Chevy K10 and C10 Blazer and Jimmy owners with a 6.6L or 7.4L V8 engine. They enhance performance, provide improved aesthetics, and offer a straightforward installation process. With their durable construction and compatibility with modern emissions systems, these headers are an excellent investment for any classic vehicle enthusiast.

OSBuyzone 6401A-BK-JT tube headers are aftermarket exhaust components designed for use with GMC and Chevy Blazer, Jimmy, and K10 C10 vehicles produced between 1966 and 1987 with a block V8 engine. These headers are known for their durability and performance improvements. Here are some pros and cons of purchasing these headers:

Pros:

1. Improved Performance: These headers are designed to improve exhaust flow, resulting in better engine performance. This can lead to increased horsepower and torque.

2. Durability: OSBuyzone headers are made from heavy-duty steel and are designed to withstand the rigors of off-road use. They are also resistant to corrosion, ensuring long-lasting performance.

3. Easy Installation: These headers are relatively easy to install, as they come with all necessary hardware and instructions. The bolt-on design makes installation a straightforward process.

4. Enhanced Exhaust Sound: These headers produce a more aggressive exhaust note, which can be a desirable feature for many vehicle owners.

Cons:

1. Cost: Aftermarket headers like the OSBuyzone 6401A-BK-JT can be expensive compared to stock headers. This may be a deterrent for some vehicle owners.

2. Potential for Increased Emissions: These headers may result in increased emissions, as they can allow for more exhaust gases to exit the engine at a faster rate. This could potentially lead to failure of emissions testing, depending on local regulations.

3. Requires Custom Exhaust System: In some cases, installing these headers may require a custom exhaust system to be fabricated, adding to the overall cost and complexity of the installation.

Conclusion:

OSBuyzone 6401A-BK-JT tube headers offer several benefits, including improved performance, durability, and enhanced exhaust sound. However, they also come with some drawbacks, such as increased cost, potential for increased emissions, and the need for a custom exhaust system in some cases. Ultimately, the decision to purchase these headers depends on the individual vehicle owner's priorities and budget.

Recommendation:

If you are looking for significant performance gains and are willing to invest in the cost of these headers and a custom exhaust system, then the OSBuyzone 6401A-BK-JT tube headers may be a good choice for you. However, if you are on a tight budget or are concerned about the potential for increased emissions, then you may want to consider other options or wait until you have the resources to make the investment.

specifications maniheader:

  • for models: K10, C10, Blazer, Jimmy
  • for makes: Gmc, Chevy
  • brand: Osbuyzone
  • type: Exhaust Header
  • items included: Gasket, Mounting Hardware
  • material: Stainless Steel
  • substrate material: Steel
  • features: Coated
  • placement on vehicle: Front
  • manufacturer part number: 6401A-BK-JT
  • oe/oem part number: Not Oem
  • color: Black
  • manufacturer warranty: 1 Year
  • head flange thickness: 5/16 In.
  • primaries diameter: 1-1/2 In.
  • pipe thickness: 16-gauge
  • collector diameter: 3 Inch
  • surface finish: High Temperature Black Coating
  • fitment: For 60-87 Chevy/gmc Trucks And Suvs

shipping maniheader:

  • class: Standard
  • type: Fixed
  • cost: $0.00
  • service: Standard
  • transit: 4-7 Days

payments maniheader:

  • wallet: Paypal
  • credit card: Visa
  • other

general maniheader:

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

offer maniheader:

  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: December 4, 2025
  • best offers: True
  • quantity: 6

seller maniheader:

  • rating: 98.5%
  • # reviews: 253

returns maniheader:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: k10, c10, blazer, jimmy, for makes: gmc, chevy, type: exhaust header, items included: gasket, mounting hardware, substrate material: steel, features: coated, placement on vehicle: front, oe/oem part number: not oem, manufacturer warranty: 1 year, head flange thickness: 5/16 in., primaries diameter: 1-1/2 in., pipe thickness: 16-gauge, collector diameter: 3 inch, surface finish: high temperature black coating, fitment: for 60-87 chevy/gmc trucks and suvs,
category: auto parts > car truck parts accessories > exhaust emission systems > manifolds headers, color: black, material: stainless steel, sku: 9413388767979761,

Osbuyzone 6401A-BK Is Similar To:

maniheader logo