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Best Automotive Performance Exhaust Manifolds

Pacesetter 753505 Direct-Fit Manifold with Catalytic Converter
Direct bolt-on replacement of original equipment with low restriction tubular design. Enter your model number to make sure this fits.
Reviews
"Ehhh it's ok."
"Pacesetter has been around for a very long time and has been a very good product line even for hard to find applications."
"Not perfect fit by my mecsnic make work code clear so far is good."
"Exhaust flange doesn't fit properly and needed to fixed to be flush."
"I ended up replacing the studs and using a stainless bolt and nut for the connection to the secondary exhaust pipe."
"Have it installed on a 2006 Nissan Titan that had cracked OEM manifolds."
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Pacesetter 750036 OEM Replacement Manifold Converter
Stainless Steel tubing and converter with 3/8 inches thick flange. Enter your model number to make sure this fits.
Reviews
"Had this installed on my sons 2002 Lexus is300."
"I called about getting a refund since they rattle and the person I talked to said if the cat itself is fine, they cannot return it.. never heard of customer service like that.. otherwise it does the job."
"My 2002 Lexus is 300 Sport cross had a P0430 code, I purchased this Pacesetter replacement and couldn't be happier, my car has a nice growl to it as well."
"It was really hard getting it to fit the engine though, but after drilling out bigger holes it fit right in."
"it was delivered when expected, fit well, and the code P0430 is no more."
"Just feel that for the price I should have been more excited and I wasn't."
"Failed after 6 months and the requirements for a refund will cost more than the part itself."
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aFe 46-40032 BladeRunner Ductile Iron Exhaust Manifold for Dodge Diesel Trucks L6 5.9L
Eliminate the costly exhaust manifold cracks prevalent in the factory exhaust manifold. In recent testing, this exhaust manifold outflowed the factory exhaust manifold by 50 percent improving performance and throttle response. Enter your model number to make sure this fits.
Reviews
"I'm a machinist so i can tell you that its a quality casting and the machine work isn't bad.It only took about 3 hours and 12+ beers but now my turbo actually spools up and the truck runs like a scalleded dog."
"Heavy duty, American Made."
"Great product, fits as well as the stock one."
"Worked perfect,use the gaskets that come with it.I ordered others and had to change them out for the ones it came with."
"A little tricky that it says "all hardware" included on the sales page but you still need gaskets for the turbo and block as well as a couple of bolts for the new coolant line bracket (have to cut the old one and drill a hole through it to install the new bracket)."
"After 260,000 plus miles on my 2000 Dodge diesel dually, the original exhaust manifold cracked."
"Can actually feel the power difference."
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Best Automotive Performance Exhaust Studs & Nuts

Blox Racing BXFL-00303 Manifold Stud Kit - 10 Piece
Blox Racing and its manufacturing partners meet or exceed ISO 9001 certification which further ensures Blox Racing's overall commitment to the highest standards of production management and quality control. Enter your model number to make sure this fits.
Reviews
"Bought this about a year ago and installed, was super impressed and without a doubt you NEED these if installing an aftermarket intake manifold on an H series engine with a thermal gasket."
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Best Automotive Performance Engine Intake Manifold Bolt & Spring Kits

ARP 354-2103 Intake Stud Kit for Small Block Ford
Available in choice of black oxide finish chrome moly or corrosion resistant stainless steel, as well as hex or 12-point heads. Enter your model number to make sure this fits.
Reviews
"These studs are top-of-the-line, high quality, and look good!"
"nicest thing about using these, you don't have to worry about gasket slipping while trying to install intake,"
"Love this kit to install my intake manifold on the 302 V8."
"I had sticker shock at the cost, but it does make intake installation much better."
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