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#42511170FLT
Flowtech 11170FLT Long Tube Header, 1.625 Inch Tube Size
$294.95
/each
Factory Shipped
$327.95
Save $33.00
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Product Summary
Long Tube Header Tube Type, D-port Exhaust Port Shape
Rebates Available
See rebate detailsKey Specs
| MFG. Part # | 11170FLT |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | D-port |
| Flange Style | Standard |
| Primary Tube Diameter | 1-5/8" |
Need To Know
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855.313.9176Quick and Easy Returns
Return PolicyFlowtech Exhaust 11170FLT Details
Flowtech Exhaust 11170FLT Details
Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
- Fuel Economy From The Engine
- Leak Test For Max Performance
- Mandrel-Formed Power Plenum
- Leakproof O-Ringed Port Seals
- Include All Mounting Hardware
- Constructed of .049 cold roll flash mild steel tubing
- Precision engineered for fit, performance and economy
Application
1964 Pontiac LeMans
1965 Pontiac GTO
1965 Pontiac LeMans
1966 Pontiac GTO
1966 Pontiac LeMans
1967 Pontiac LeMans
1968 Pontiac GTO
1968 Pontiac LeMans
1969 Pontiac GTO
1969 Pontiac LeMans
1970 Pontiac Firebird
1970 Pontiac GTO
1970 Pontiac LeMans
1971 Pontiac Firebird
1971 Pontiac GTO
1971 Pontiac LeMans
1972 Pontiac Firebird
1972 Pontiac GTO
1972 Pontiac LeMans
1973 Pontiac Firebird
1973 Pontiac Grand Am
1973 Pontiac GTO
1973 Pontiac LeMans
1974 Pontiac Firebird
1974 Pontiac Grand Am
1974 Pontiac LeMans
1975 Pontiac Firebird
1975 Pontiac Grand Am
1975 Pontiac LeMans
1976 Pontiac Firebird
1977 Pontiac Firebird
1978 Pontiac Firebird
1979 Pontiac Firebird
Charts
Rebates
Holley October Promo 10% Off Select Parts Sale
Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.
Guides & Documents
CARB Warning
For race/ off road use only
CARB Warning
For race/ off road use only
Flowtech Exhaust 11170FLT Specifications
Flowtech Exhaust 11170FLT Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 11170FLT |
| Brand | Flowtech Exhaust |
| Header Tube Type | Long Tube |
| Exhaust Port Shape | D-port |
| Flange Style | Standard |
| Primary Tube Diameter | 1-5/8" |
| Material Type | Steel |
| Color | Black |
| Weld-Up | No |
| Collector Diameter | 3 Inch |
| Finish | Painted |
| Hardware Included | Yes |
| Gasket(s) Included | Yes |
| Collector Reducers Included | Yes |
| Collector Reducer Exit Diameter | 2.5" |
| Collector Attachment Type | 3-bolt flange |
| GENERAL | |
| Sold in Quantity | Pair |
| GTIN Code | 787480111708 |
| Emission Code | 3 |
Ratings & Reviews
Ratings & Reviews
Questions & Answers
Questions & Answers
2 Questions • 2 Answers
Are these compatible with a column shifter?
by P.A.
• a year ago
1 answer
View Answer
Yes, would these particular headers fit a Buick 455 big block?
by Adam
• 8 years ago
1 answer
View Answer
2 of 2 questions shown
Fitment
Fitment
1957 Pontiac Bonneville
347 Pontiac V8
1958 Pontiac Bonneville
370 Pontiac V8
1959-1966 Pontiac Bonneville
389 Pontiac V8
1957 Pontiac Catalina
347 Pontiac V8
1958 Pontiac Catalina
370 Pontiac V8
1959-1966 Pontiac Catalina
389 Pontiac V8
1957 Pontiac Chieftain
347 Pontiac V8
1958 Pontiac Chieftain
370 Pontiac V8
1962-1966 Pontiac Grand Prix
389 Pontiac V8
1964-1966 Pontiac GTO
389 Pontiac V8
1963-1966 Pontiac LeMans
389 Pontiac V8
1957 Pontiac Star Chief
347 Pontiac V8
1958 Pontiac Star Chief
370 Pontiac V8
1959-1966 Pontiac Star Chief
389 Pontiac V8
1957 Pontiac Super Chief
347 Pontiac V8
1958 Pontiac Super Chief
370 Pontiac V8
1961-1966 Pontiac Tempest
389 Pontiac V8
1960-1961 Pontiac Ventura
389 Pontiac V8

