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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Fits Small Block Chevy 2.5" collector Black Ceramic, Exhaust Manifold 8525-3HKRHooker's new cast iron small block Chevy exhaust manifolds offer an increase in performance and visual appearance over stock style manifolds. Their compact design fit into a wide variety of replacement and engine swap applications. This means you get the traditional look and easy fitment of a stock style exhaust manifold but now with a smoother, cleaner appearance, plus more modern features. These manifolds are cast out of high silicon molybdenum
Hooker's new cast iron small-block Chevy exhaust manifolds offer an increase in performance and visual appearance over stock-style manifolds. Their compact design fit into a wide variety of replacement and engine swap applications. This means you get the traditional look and easy fitment of a stock style exhaust manifold but now with a smoother, cleaner appearance, plus more modern features. These manifolds are cast out of high silicon-molybdenum ductile iron for high temperature strength and better resistance to oxidation and cracking. Internally these manifolds have a larger than stock 1 5/8-inch cross-sectional area and 2 1/2-inch outlets for better air flow and improved performance. Designed for rectangular port heads, these manifolds fit many popular GM applications including standard straight and Vortec straight plug head designs. Finishes include natural, silver, black, and titanium ceramic. Gaskets and hardware are included, along with weld-on flanges to aid in downpipe installation.
Features:
- A smoother, cleaner appearance compared to original exhaust manifolds, while maintaining a factory style look and feel
- Made from high silicon-molybdenum ductile iron for high temperature strength plus resistance to oxidation and cracking
- Designed with a larger 1 5/8? cross-sectional area and 2 ½? outlets for better air flow and increased performance
- Designed for rectangular port heads
- Accommodates standard straight and Vortec straight plug head designs for better application coverage
- Includes weld-on flanges for easier downpipe pipe installation (custom downpipe required)
- Available in natural cast iron or ceramic coated finishes (silver, black and titanium)
- Includes mounting hardware and gaskets for inlet and outlet flanges
Specs:
| Bolt Size | 3/8-16 x 3/4 |
|---|---|
| Brand | Hooker |
| California Proposition 65 Chemical Name | Nickel (Metallic) |
| California Proposition 65 Required | Yes |
| CARB (California) Compliant | No |
| Collector Diameter | 2.50 inch |
| Emission Code | 3 |
| Engine | Chevrolet Small Block Gen I |
| Exhaust Port Shape | Rectangle |
| Header Finish | Black Ceramic |
| Header Style | Manifold |
| Material | Cast Iron |
| Primary Tube Diameter (in) | 1-5/8 inch |
| Product Type | Manifold |
| Sale Category | Exhaust |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1968-1974 | Chevrolet | C10 Pickup | Base |
| 1968-1974 | GMC | C15/C1500 Pickup | Base |
| 1973-1974 | Buick | Century | Base |
| 1973-1974 | Buick | Century | Luxus |
| 1961-1974 | Buick | LeSabre | Base |
| 1974 | Buick | LeSabre | Luxus |
| 1973-1974 | Buick | Regal | Base |
| 1958-1974 | Chevrolet | Bel Air | Base |
| 1970-1974 | Chevrolet | Camaro | Base |
| 1973-1974 | Chevrolet | Camaro | LT |
| 1970-1974 | Chevrolet | Camaro | Z28 |
| 1973-1974 | Chevrolet | Caprice | Classic |
| 1973-1974 | Chevrolet | Caprice | Estate |
| 1958-1974 | Chevrolet | Impala | Base |
| 1973-1974 | Chevrolet | Laguna | Base |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1964-1974 | Chevrolet | Malibu | Base |
| 1974 | Chevrolet | Malibu | Classic |
| 1973-1974 | Chevrolet | Malibu | Estate |
| 1971-1974 | Chevrolet | Monte Carlo | Base |
| 1973-1974 | Chevrolet | Monte Carlo | Landau |
| 1961-1974 | Oldsmobile | Cutlass | Base |
| 1968-1974 | Oldsmobile | Cutlass | S |
| 1971-1974 | Oldsmobile | Delta 88 | Base |
| 1971-1974 | Oldsmobile | Delta 88 | Royale |
| 1958-1974 | Pontiac | Catalina | Base |
| 1959-1974 | Pontiac | Catalina | Safari |
| 1971-1974 | Pontiac | Firebird | Base |
| 1971-1974 | Pontiac | Firebird | Esprit |
| 1971-1974 | Pontiac | Firebird | Formula |
| 1971-1974 | Pontiac | Firebird | Trans Am |
| 1973-1974 | Pontiac | Grand Am | Base |
| 1962-1974 | Pontiac | Grand Prix | Base |
| 1963-1974 | Pontiac | LeMans | Base |
| 1972-1974 | Pontiac | LeMans | Luxury |
| 1969-1974 | Pontiac | LeMans | Safari |
| 1974 | Pontiac | LeMans | Safari Luxury |
| 1970-1974 | Pontiac | LeMans | Sport |
| 1971-1973 | Buick | Centurion | Base |
| 1965-1973 | Buick | LeSabre | Custom |
| 1970-1973 | Chevrolet | Camaro | RS |
| 1965-1973 | Chevrolet | Chevelle | Deluxe |
| 1973 | Chevrolet | Laguna | Estate |
| 1973 | Chevrolet | Monte Carlo | S |
| 1964-1973 | Pontiac | GTO | Base |
| 1970-1972 | Buick | Skylark | 350 |
| 1961-1972 | Buick | Skylark | Base |
| 1968-1972 | Buick | Skylark | Custom |
| 1964-1972 | Buick | Sportwagon | Base |
| 1958-1972 | Chevrolet | Biscayne | Base |
| 1970-1972 | Chevrolet | Camaro | SS |
| 1971-1972 | Chevrolet | Caprice | Base |
| 1964-1972 | Chevrolet | Chevelle | Base |
| 1967-1972 | Chevrolet | Chevelle | Concours |
| 1969-1972 | Chevrolet | Chevelle | Concours Estate |
| 1969-1972 | Chevrolet | Chevelle | Greenbrier |
| 1968-1972 | Chevrolet | Chevelle | Malibu |
| 1968-1972 | Chevrolet | Chevelle | Nomad |
| 1964-1972 | Chevrolet | Chevelle | SS |
| 1972 | Oldsmobile | Cutlass | Cruiser |
| 1961-1972 | Oldsmobile | F85 | Base |
| 1971-1972 | Pontiac | Catalina | Brougham |
| 1971 | Oldsmobile | Delta 88 | Custom |
| 1970-1971 | Pontiac | GTO | The Judge |
| 1971 | Pontiac | LeMans | T37 |
| 1959-1970 | Chevrolet | El Camino | Base |
| 1968-1970 | Chevrolet | El Camino | Custom |
| 1968-1970 | Chevrolet | El Camino | SS |
| 1964-1970 | Oldsmobile | Vista Cruiser | Base |
| 1958-1970 | Pontiac | Bonneville | Base |
| 1959-1970 | Pontiac | Bonneville | Safari |
| 1962-1970 | Pontiac | Catalina | Ventura |
| 1967-1970 | Pontiac | Executive | Base |
| 1967-1970 | Pontiac | Executive | Safari |
| 1961-1970 | Pontiac | Tempest | Base |
| 1970 | Pontiac | Tempest | GT |
| 1961-1969 | Buick | Special | Base |
| 1966-1969 | Buick | Sportwagon | Custom |
| 1967-1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1961-1969 | Pontiac | Tempest | Custom |
| 1961-1969 | Pontiac | Tempest | Safari |
| 1967-1968 | Chevrolet | Chevelle | 300 |
| 1961-1967 | Buick | Special | Deluxe |
| 1964-1967 | Chevrolet | Impala | SS |
| 1964-1967 | Oldsmobile | Cutlass | Holiday |
| 1967 | Oldsmobile | Cutlass | Turnpike Cruiser |
| 1964-1967 | Oldsmobile | Vista Cruiser | Custom |
| 1964-1967 | Pontiac | Catalina | 2+2 |
| 1962-1966 | Oldsmobile | F85 | Deluxe |
| 1966 | Oldsmobile | F85 | Holiday |
| 1958-1966 | Pontiac | Star Chief | Base |
| 1966 | Pontiac | Star Chief | Executive |
| 1962-1965 | Buick | Wildcat | Base |
| 1965 | Buick | Wildcat | Custom |
| 1965 | Buick | Wildcat | Deluxe |
| 1962-1965 | Chevrolet | Chevy II | Base |
| 1962-1965 | Chevrolet | Chevy II | Nova |
| 1964-1965 | Chevrolet | Chevy II | Nova SS |
| 1961-1965 | Oldsmobile | Starfire | Base |
| 1961-1963 | Buick | Invicta | Base |
| 1959-1962 | Pontiac | Bonneville | Custom |
| 1961-1962 | Pontiac | Tempest | LeMans |
| 1960-1961 | Pontiac | Ventura | Base |
| 1960 | Chevrolet | Biscayne | Fleetmaster |
| 1958 | Chevrolet | Del Ray | Base |
| 1958 | Pontiac | Chieftain | Base |
| 1958 | Pontiac | Chieftain | Safari |
| 1958 | Pontiac | Star Chief | Custom Safari |
| 1958 | Pontiac | Star Chief | Super Deluxe |
| 1958 | Pontiac | Super Chief | Base |
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
4.2 ★★★★★
Based on 232 reviews
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Product Reviews
★★★★★ 5
good quality
Size: X-Small, Color: Black (001)/White
keeps me warm during the cold months when i play golf. tight enough to move around in but not tight at all around the neck. overall a really great product. has kept up for the last 4 years very well
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Fit and Length
Size: X-Large, Color: (401) Royal / / White
Yeah this fits perfectly. Very soft, the color pops, keeps you warm. I use these under my sweatshirts, cable sweaters, and my flannel shirts. For me it's about the arm length and how well the item contours to the body to help with warmth. Thank you for getting this right.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Worth it.
Size: Small, Color: Black (001)/White
Living in North Dakota, staying warm is invaluable. UnderArmour Cold Gear is the only base layer the provides warmth, KEEPS warmth, and protects from the unforgiving wind. Every winter I go on the hunt for thermals, layering options and I always find others to be saggy or incredibly tight, either way, once I begin shoveling or snowblowering, and sweating, other products become soaked, sticking to skin, unbreathable and quickly your sweat stuck to your body under layers in now creating a cold,chill, freeze to your body, and on a -10F day, it can become a dangerous situation.
I honestly was hesitant to purchase UnderArmour, I felt it was too hyped up or paying for a name. BUT IT IS NOT. UnderArmour isn't a name, it is a company that has made the highest quality base layer, warmth, breathable and it really wicks sweat away; I may not know how it does it, but it works!
For sizing, I ordered a small in the women's longsleeve/turtleneck black coldgear. I'm 5ft and roughly 110lbs. I like the fit, it is meant to fit your body. I probably could wear an extra small, but I like the sleeve length in the small and it fits very well.
Stay warm folks!
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Reviewed in the United States on December 6, 2023
★★★★★ 5
Great cold gear
Size: Large, Color: White (100)/Black
Warm, very comfortable. I wear these all winter. The neck can be a little tight and the cut is definitely fitting. Its got thin like fleece on the inside that keeps you warm.
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Reviewed in the United States on November 3, 2025
★★★★★ 4
Tight but stays in place, comfy and keeps you warm
Size: Medium, Color: Charcoal Light Heather (019)/Black
I liked this shirt because it keeps me warm when I'm outside even at negative temperatures, I can work out comfortably in it and the sweat dries out soon; also, the interior of the shirt is made of a very comfortable material.
I don't like that this is very tight, cool if you want to use it under your usual sports clothes but if you want to use it as is I would suggest going up a size.
I use this shirt almost every day to work out during winter time, I've washed them several times and they still feel as comfortable as the first day.
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Reviewed in the United States on January 5, 2022