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Description
Flowtech Upright Headers - 11545FLTOverview: Flowtech Headers are the perfect combination of quality and value. These Small Block Chevy Upright headers available in 1 5 8" and 1 3 4" tube diameters are ideal for even big cubic inch Small Block Chevy engines. They feature a merged collector coupled with a collector spear that is welded inside the collector. These components help to improve the flow and performance of the header. Features: CNC Mandrel bent tubes provide consistent tubing
Overview:
Flowtech Headers are the perfect combination of quality and value. These Small Block Chevy Upright headers available in 1-5/8" and 1-3/4" tube diameters are ideal for even big cubic inch Small Block Chevy engines.
They feature a merged collector coupled with a collector spear that is welded inside the collector. These components help to improve the flow and performance of the header.
Features:
- CNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
- Heavy duty 16-gauge 409SS tubing for increased strength and durability
- 1-5/8” and 1-3/4” tubing diameters available for increased exhaust flow increasing performance and improved throttle response
- 3” collector for maximum strength and exhaust flow
- Extra thick header flange for a leak-free seal and maximum strength
- Welded-in collector merge spears to control exhaust gas re-entry into primary tubes
Application:
- 1955-1986 Chevrolet Corvette
- 1959-1986 Chevrolet El Camino
- 1959-1986 Pontiac Parisienne
- 1958-1985 Chevrolet Impala
- 1955-1981 Chevrolet Bel Air
- 1955-1981 Pontiac Laurentian
- 1966-1986 Chevrolet Caprice
- 1967-1986 Chevrolet C10 Suburban
- 1967-1986 Chevrolet K10 Suburban
- 1967-1986 Chevrolet K20 Suburban
- 1967-1986 Chevrolet Camaro
- 1967-1986 Chevrolet C20 Suburban
- 1964-1983 Chevrolet Malibu
- 1968-1986 Pontiac Firebird
- 1970-1986 Chevrolet Monte Carlo
- 1970-1986 GMC Jimmy
- 1971-1986 Pontiac Bonneville
- 1960-1974 Chevrolet C20 Pickup
- 1960-1974 Chevrolet C10 Pickup
- 1960-1974 Chevrolet C30 Pickup
- 1960-1974 Chevrolet K10 Pickup
- 1960-1974 Chevrolet K20 Pickup
- 1958-1972 Chevrolet Brookwood
- 1958-1972 Chevrolet Biscayne
- 1968-1981 Pontiac LeMans
- 1959-1972 Chevrolet Kingswood
- 1958-1970 Pontiac Strato-Chief
- 1975-1986 Chevrolet C10
- 1975-1986 Chevrolet K5 Blazer
- 1975-1986 Chevrolet K20
- 1975-1986 Chevrolet C20
- 1975-1986 Chevrolet C30
- 1975-1986 Chevrolet G20
- 1975-1986 Chevrolet G30
- 1975-1986 Pontiac Grand Prix
- 1970-1981 Pontiac Catalina
- 1975-1986 Chevrolet G10
- 1975-1986 Chevrolet K10
- 1969-1979 Chevrolet Nova
- 1977-1986 Buick Regal
- 1964-1973 Chevrolet Chevelle
- 1977-1986 Chevrolet K30
- 1978-1986 Oldsmobile Cutlass
- 1975-1983 Pontiac Grand LeMans
- 1978-1986 Oldsmobile Cutlass Supreme
- 1978-1986 GMC Caballero
- 1967-1974 GMC C15/C1500 Pickup
- 1979-1986 GMC G1500
- 1979-1986 GMC G2500
- 1964-1971 Pontiac Acadian
- 1967-1974 GMC K25/K2500 Suburban
- 1967-1974 GMC C15/C1500 Suburban
- 1967-1974 GMC C25/C2500 Suburban
- 1967-1974 GMC K15/K1500 Suburban
- 1967-1974 GMC K25/K2500 Pickup
- 1979-1986 GMC K1500
- 1979-1986 GMC K1500 Suburban
- 1967-1974 GMC C25/C2500 Pickup
- 1967-1974 GMC K15/K1500 Pickup
- 1967-1974 Chevrolet G20 Van
- 1967-1974 GMC C35/C3500 Pickup
- 1979-1986 GMC K2500
- 1979-1986 GMC K2500 Suburban
- 1967-1974 GMC G15/G1500 Van
- 1967-1974 GMC G25/G2500 Van
- 1979-1986 GMC K3500
- 1979-1986 GMC C2500
- 1979-1986 GMC C2500 Suburban
- 1979-1986 GMC C3500
- 1979-1986 GMC C1500
- 1973-1980 Pontiac Grand Am
- 1979-1986 GMC C1500 Suburban
- 1975-1982 Oldsmobile Delta 88
- 1979-1986 GMC G3500
- 1960-1966 Chevrolet Suburban
- 1968-1974 Chevrolet G10 Van
- 1971-1977 Pontiac Ventura
- 1955-1961 Chevrolet Nomad
- 1960-1966 GMC 3000
- 1960-1966 GMC 3500
- 1968-1974 Chevrolet K30 Pickup
- 1971-1977 GMC Sprint
- 1978-1984 Oldsmobile Cutlass Calais
- 1968-1974 GMC K35/K3500 Pickup
- 1963-1968 Chevrolet Chevy II
- 1955-1960 Chevrolet Truck
- 1955-1960 GMC Truck
- 1964-1969 Pontiac Beaumont
- 1969-1974 Chevrolet Blazer
- 1960-1965 GMC Suburban
- 1977-1981 Buick Century
- 1978-1982 Buick LeSabre
- 1970-1974 GMC G35/G3500 Van
- 1970-1974 Chevrolet G30 Van
- 1955-1959 GMC 250
- 1955-1959 GMC 300
- 1955-1959 GMC 350-8
- 1955-1959 GMC 370
- 1955-1959 GMC F350
- 1955-1959 GMC F370
- 1955-1959 GMC FM340
- 1955-1959 GMC 100
- 1955-1959 GMC 150
- 1955-1959 GMC FM350
- 1955-1959 GMC M300
- 1955-1959 GMC PM150
- 1955-1959 GMC PM250
- 1955-1959 GMC S300
- 1955-1959 GMC S370
- 1975-1979 Chevrolet Monza
- 1969-1972 Chevrolet Townsman
- 1960-1963 GMC 1000 Series
- 1960-1963 GMC 1500 Series
- 1960-1963 GMC 2500 Series
- 1975-1978 GMC G15
- 1975-1978 GMC G25
- 1975-1978 GMC G35
- 1956-1959 GMC PM151
- 1956-1959 GMC PM251
- 1955-1958 Pontiac Pathfinder
- 1955-1958 Chevrolet Sedan Delivery
- 1975-1978 GMC K15
- 1975-1978 GMC K15 Suburban
- 1975-1978 GMC K25
- 1973-1976 Chevrolet Laguna
- 1972-1975 Pontiac Grandville
- 1975-1978 GMC K25 Suburban
- 1980-1983 Oldsmobile Cutlass Cruiser
- 1975-1978 GMC C25
- 1975-1978 GMC C25 Suburban
- 1975-1978 GMC C35
- 1975-1978 GMC C15
- 1975-1978 GMC C15 Suburban
- 1971-1974 Pontiac Grand Safari
- 1955-1957 Chevrolet One-Fifty Series
- 1972-1974 Chevrolet P30 Van
- 1955-1957 Chevrolet Two-Ten Series
- 1977-1979 Buick Skylark
- 1968-1970 Pontiac Tempest
- 1957-1959 GMC PM152
- 1957-1959 GMC PM153
- 1959-1961 Chevrolet Parkwood
- 1977-1979 Pontiac Phoenix
- 1975-1977 Oldsmobile Custom Cruiser
- 1978-1980 Oldsmobile Cutlass Salon
- 1977-1979 Oldsmobile Omega
- 1977-1979 Oldsmobile Starfire
- 1969-1970 Chevrolet Estate
- 1957-1958 Chevrolet Del Ray
- 1978-1979 Pontiac Sunbird
- 1955-1956 GMC M340
- 1977-1978 GMC K35
- 1958 GMC PM252
- 1958 GMC PM253
- 1958 Chevrolet Yeoman
- 1959 Chevrolet 3B
- 1959 Chevrolet 3C
- 1959 Chevrolet 3D
- 1959 Chevrolet 3E
- 1959 Chevrolet 3F
- 1959 Chevrolet 3G
- 1967 Chevrolet K20 Panel
- 1955 GMC 100-22
- 1955 GMC 150-22
- 1955 GMC 250-22
- 1955 GMC 280-22
Specs:
| Application | Small Block Chevy |
|---|---|
| Brand | Flowtech |
| Collector Diameter | 3.00 inch |
| Collector Length | 12 inch |
| Emission Code | 4 |
| Engine | Chevrolet Small Block |
| Header Finish | Natural |
| Header Style | Upright |
| Installed Height | 37.0" |
| Primary Tube Dia. | 1-5/8 inch |
| Product Type | Headers |
| Tube Material | 409 Stainless Steel |
| Warning | California Proposition 65 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Very nice at a nice price.
Color: White, Size: 35 Inch, Style: 2 Pack, Color: White, Size: 35 Inch, Style: 2 Pack
Very easy to mount on the wall. Very sturdy with about 10-12 lbs on each shelf. Only took about 15 minutes to hang each one.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Cat playground
Color: Black, Size: 35 Inch, Style: 3 Pack, Color: Black, Size: 35 Inch, Style: 3 Pack
Easy to install. Sturdy enough for 2 large rambunctious kitties to play on and look very nice. I was working on a vertical play space for the cats and since these come in many sizes it worked great. I did add grip tape to some.
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Reviewed in the United States on May 30, 2026
★★★★★ 3
Not the best quality
Color: Rustic Brown, Size: 35 Inch, Style: 2 Pack, Color: Rustic Brown, Size: 35 Inch, Style: 2 Pack
The shelving unit was not as I had expected. It arrived damaged. The damage is on the under side though. They are hollow and not hardwood as I had expected. Save your money if you want something of good quality. These are like 3 pieces of pressed wood glued together. They are space saving and look great in my space. The mounting hardware it comes with was plenty enough to hang these but make sure you hang them in the studs if at all possible. Assembly was simple. It does come with a micro level. Which a kid or pet could accidentally swallow. It’s like pill capsule sized so just be careful when opening the package.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Great shelving!
Color: Black, Number Of Shelves: 2, Size: 40"W x 6.5"D, Color: Black, Number Of Shelves: 2, Size: 40"W x 6.5"D
These shelves are amazing, easy to install and look very impressive! Price is good too!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Clean look and very sturdy
Color: Brown, Number Of Shelves: 2, Size: 36"W x 6.5"D
These floating shelves look great and were easy to install. The invisible brackets give them a clean, modern look, and they feel sturdy once mounted. Perfect for adding storage or décor in a bathroom, living room, or bedroom. Great quality for the price.
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Reviewed in the United States on February 15, 2026