- Home »
- Catalog »
- Custom Header Components »
- Header Flanges »
- Mild Steel Header Flanges
Stainless Headers Mfg, Inc. - Mild Steel Header Flanges
Our American made mild steel header flanges are precision laser cut from 0.375" 1018 cold rolled steel to our exacting specifications. We carry over 400 different flange designs. Many of the popular models come in several different primary tube port sizes. They come pre-surfaced and are ready for your header building project. If you don't see the flange you're looking for, talk with one of our exhaust specialists about custom header flange cutting.
Select a Sub-Category
Mild Steel Header Flanges Featured Products
Description: Oldsmobile 403/455 Mild Steel Header Flange
Item #: SHM-5420-MSHF
Condition:
New
Price: $39.95
Pontiac, 301
Description: Pontiac 301 Turbo V8 Mild Steel Header Flange
Item #: SHM-5402-MSHF
Condition:
New
Price: $44.95
Description: Pontiac 350/389/400/455 D-Port Mild Steel Header Flange
Item #: SHM-5401-MSHF
Condition:
New
Price: $39.95
Ram Air
Description: Pontiac 400/455 Ram Air IV Round Port Mild Steel Header Flange
Item #: SHM-5400-MSHF
Condition:
New
Price: $39.95
Edelbrock, Ram Air
Description: Pontiac 400/428/455 V8 RAII/RAIV Edelbrock Performer RPM Mild Steel Header Flange
Item #: SHM-5415-MSHF
Condition:
New
Price: $39.95
Ram Air
Description: Pontiac 400/455 Ram Air V Mild Steel Header Flange
Item #: SHM-5405-MSHF
Condition:
New
Price: $39.95
Ram Air
Description: Pontiac 400/455 Ram Air V Round Port Mild Steel Header Flange
Item #: SHM-5405R-MSHF
Condition:
New
Price: $39.95
911
Description: Porsche 911 Carrerra 996 Mild Steel Header Flange
Item #: SHM-6156A-MSHF
Condition:
New
Price: $34.95
Description: Porsche 944 "S" 16v Mild Steel Header Flange-Angled Bolt Pattern
Item #: SHM-6155B-MSHF
Condition:
New
Price: $39.95
Description: Porsche 944 8v Mild Steel Header Flange- Inline Bolt Pattern
Item #: SHM-6155A-MSHF
Condition:
New
Price: $39.95
Description: Saturn L-Series 3.0L V6 Mild Steel Header Flange
Item #: SHM-6261-MSHF
Condition:
New
Price: $34.95
Description: Saturn SC2 Mild Steel Header Flange
Item #: SHM-6260-MSHF
Condition:
New
Price: $39.95
Description: Small Block Chevy 5.7L D-Port LT1 Mild Steel Header Flange
Item #: SHM-2510-MSHF
Condition:
New
Price: $39.95
Description: Small Block Chevy C4 Corvette 5.7L LT5 Mild Steel Header Flange
Item #: SHM-2615-MSHF
Condition:
New
Price: $39.95
Stahl
Description: Small Block Chevy Close-Port Stahl Pattern Mild Steel Header Flange
Item #: SHM-2650-MSHF
Condition:
New
Price: $39.95
Brodix
Description: Small Block Chevy Mild Steel Header Flange for Brodix BD2000
Item #: SHM-2519-MSHF
Condition:
New
Price: $39.95
Dart, Reher-Morrison
Description: Small Block Chevy Mild Steel Header Flange to fit Reher-Morrison Head
Item #: SHM-2516-MSHF
Condition:
New
Price: $39.95
SBC
Description: Available in 1 5/8" or 1 3/4" Round Port
Item #: SHM-2514-MSHF
Condition:
New
Price: $39.95
SBC
Description: Small Block Chevy Splayed Valve Mild Steel Header Flange
Item #: SHM-2517-MSHF
Condition:
New
Price: $39.95
Stahl
Description: Small Block Chevy Spread-Port Stahl Pattern Mild Steel Header Flange
Item #: SHM-2637-MSHF
Condition:
New
Price: $39.95
SBC
Description: Small Block Chevy Square Port Mild Steel Header Flange
Item #: SHM-2512-MSHF
Condition:
New
Price: $39.95
Stahl
Description: Small Block Chevy Stahl Pattern Adapter Kit- Mild Steel
Item #: SHM-2651-MSHF
Condition:
New
Price: $285.00
Stahl Pattern, Small Block Chevy
Description: Small Block Chevy Stahl Pattern Adapter Plates- Mild Steel
Item #: SHM-2650A-MSHF
Condition:
New
Price: $215.00
AFR
Description: Small Block Ford AFR/Z304 3" Bolt Pattern Mild Steel Header Flange
Item #: SHM-3535-MSHF
Condition:
New
Price: $39.95
NEW!
Brodix, Ford Performance
Description: Small Block Ford N351 Sportsman Head Mild Steel Header Flange
Item #: SHM-3544-MSHF
Condition:
New
Price: $49.95
AFR
Description: Small Block Ford Z304 2" & 3" Mild Steel Header Flange
Item #: SHM-3535a-MSHF
Condition:
New
Price: $39.95
TrickFlow, Brodix
Description: Small Block Ford- Trick Flow 225cc Twisted Wedge Round Port Mild Steel Header Flange
Item #: SHM-3538-MSHF
Condition:
New
Price: $39.95
TrickFlow, Brodix
Description: Small Block Ford- Trick Flow Twisted Wedge Mild Steel Header Flange
Item #: SHM-3539-MSHF
Condition:
New
Price: $39.95
SBF
Description: Small Block Ford-289/302/351w Mild Steel Header Flange
Item #: SHM-3530-MSHF
Condition:
New
Price: $39.95
351c
Description: Small Block Ford-351c 2v Large Oval Port Mild Steel Header Flange
Item #: SHM-3551-MSHF
Condition:
New
Price: $34.95
351c
Description: Small Block Ford- 351C 2v Small Oval Port Mild Steel Header Flange
Item #: SHM-3552-MSHF
Condition:
New
Price: $34.95
351c
Description: Small Block Ford-351C 4V Small Square Port Mild Steel Header Flange
Item #: SHM-3531-MSHF
Condition:
New
Price: $39.95
Brodix
Description: Small Block Ford-Brodix Track 1 Mild Steel Header Flange
Item #: SHM-3577-MSHF
Condition:
New
Price: $39.95
351c
Description: Small Block Ford-Cleveland 4BBL Square Port -Boss 302- Mild Steel Header Flange
Item #: SHM-3540-MSHF
Condition:
New
Price: $39.95
Dart
Description: Small Block Ford-W Dart Pro1 225 cc Mild Steel Header Flange
Item #: SHM-3536-MSHF
Condition:
New
Price: $39.95
Dart, AFR
Description: Small Block Ford-W Mild Steel Header Flange For Dart/AFR 3" Bolt Pattern Heads- Round Port
Item #: SHM-3537A-MSHF
Condition:
New
Price: $39.95
Dart, AFR
Description: Small Block Ford-W Mild Steel Header Flange For Dart/AFR 3" Heads
Item #: SHM-3537-MSHF
Condition:
New
Price: $39.95
Description: Small Block Ford-W Raised Port Mild Steel Header Flange
Item #: SHM-3532-MSHF
Condition:
New
Price: $39.95
Description: Small Block Mopar 318 Poly Head Mild Steel Header Flange-Round Port
Item #: SHM-4509-MSHF
Condition:
New
Price: $39.95
Description: Small Block Mopar 318 Poly Head Mild Steel Header Flange-Sq. Port
Item #: SHM-4509a-MSHF
Condition:
New
Price: $39.95
Description: Small Block Mopar 318/340/360 Mild Steel Header Flange
Item #: SHM-4510-MSHF
Condition:
New
Price: $34.95
Description: Small Block Mopar W-7 Mild Steel Header Flange
Item #: SHM-4542-MSHF
Condition:
New
Price: $34.95
Description: Small Block Mopar W-9 Mild Steel Header Flange
Item #: SHM-4543-MSHF
Condition:
New
Price: $34.95
Description: Small Block Mopar W2/W5 Mild Steel Header Flange
Item #: SHM-4514-MSHF
Condition:
New
Price: $39.95
NEW!
Description: Raised Port variant of W2 header flanges, available in 1 3/4" or 1 7/8" port size
Item #: SHM-4549-MSHF
Condition:
New
Price: $49.95
NEW!
Edelbrock
Description: Round Port variant of W5 header flanges, available in 1 3/4" Port Size
Item #: SHM-4540-MSHF
Condition:
New
Price: $49.95
Brodix
Description: Small Block Mopar- Brodix B1BA Mild Steel Header Flange
Item #: SHM-4513-MSHF
Condition:
New
Price: $39.95
Description: Subaru EG33 Mild Steel Header Flange
Item #: SHM-6142-MSHF
Condition:
New
Price: $34.95
Description: Subaru EJ257 Mild Steel Header Flange
Item #: SHM-6151-MSHF
Condition:
New
Price: $24.95
Description: Subaru EZ30R Mild Steel Header Flange
Item #: SHM-6148-MSHF
Condition:
New
Price: $34.95
Popular Brands:
More About Mild Steel Header Flanges
Our American made mild steel header flanges are precision laser cut from 0.375" 1018 cold rolled steel to our exacting specifications. We carry over 400 different flange designs. Many of the popular models come in several different primary tube port sizes. They come pre-surfaced and are ready for your header building project. If you don't see the flange you're looking for, talk with one of our exhaust specialists about custom header flange cutting.