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Pontiac Grand LeMans Exhaust System

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Pontiac Grand LeMans Exhaust Manifold, Replacement Passenger Side Exhaust Manifold - Cast Iron, Direct Fit

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EXHAUST MANIFOLD

Cast iron construction; This is a high quality, direct fit replacement exhaust manifold; Made with durable, heat controlling materials for long-lasting life; Backed by 1-year, unlimited-mileage warranty.

  • Brand SKU#: Replacement REPB960703
  • Location: Passenger Side
  • Material: Cast Iron
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 1-2 Business Days
  • Aspiration Type: Naturally aspirated
  • Numberof Cylinders: 8
  • Warranty: 1-year, unlimited-mileage warranty
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Fits the following Pontiac Grand LeMans Years

  • 1980 | Base | 8 Cyl 5.0L
  • 1980 | Safari | 8 Cyl 5.0L

Pontiac Grand LeMans Muffler, Flowmaster 40 Series Original Muffler - Gray, Aluminized Steel, Minor Modifications

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FLOWMASTER – 40 SERIES ORIGINAL MUFFLERS

Flowmaster’s 40 Series Original mufflers turn give your ride that rich muscle car rumble and turn it into a performance powerhouse with an aggressive, deep tone that will make you smile as you put the pedal to the metal. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for muscle cars or vehicles that need a single exhaust
  • Backed by a lifetime warranty for stainless/3 years for aluminized steel
  • Fully MIG-welded for maximum strength
  • Comes in 16-gauge aluminized steel or stainless steel
  • Quick and easy installation
  • Very aggressive tone
  • Improves torque and horsepower
  • Come in single or dual pipe style
  • Dyno-tested
  • Brand SKU#: Flowmaster 42441
  • Series: Flowmaster 40 Series Original
  • Material: Aluminized Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
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Fits the following Pontiac Grand LeMans Years

  • 1975-1976 | Base | 8 Cyl 7.5L
  • 1975-1977 | Base | 8 Cyl 5.7L
  • 1975-1977 | Base | 8 Cyl 6.6L
  • 1975-1977 | Safari | 8 Cyl 6.6L
  • 1976 | Base | 8 Cyl 4.3L
  • 1976-1977 | LE | 8 Cyl 5.7L
  • 1977 | Base | 8 Cyl 4.9L
  • 1977 | Base | 8 Cyl 5.0L
  • 1977 | Safari | 8 Cyl 4.9L
  • 1977 | Safari | 8 Cyl 5.7L
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Pontiac Grand LeMans Headers, Hedman Painted Hedders Headers - Painted Black, Steel, 4-1, Direct Fit

$277.84 $570.00 You Save $292.16 (51%)
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HEDMAN – PAINTED HEDDERS

Is that power-robbing stock manifold still on your vehicle? If you answered yes, then replace it with a Hedman Painted Header to lower your operating temps and release extra horsepower and torque from your engine. These hedders are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Hedders have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making hedders as a one man shop but word spread fast about the horsepower and torque that Hedman hedders were producing. His hedders have been in demand by top engine builders and racers since the start. Hedman’s time perfecting hedders on the track and on the dyno ensures you will get optimum performance with every Hedman Header whether it is installed on your race car or daily driver.

  • Perfect for hot rod builds on a tight budget
  • Proudly manufactured in U.S.A.
  • Tubing size is 16 to 18 gauge depending on model
  • Size of flanges are 5/16 inch
  • These hedders are designed to be painted, so pick up a can of header paint in a color of your choice

NOTE: Not legal for use or sale in California on vehicles that came equipped with emission controls from the factory.

  • Brand SKU#: Hedman 28140
  • Series: Hedman Painted Hedders
  • Material: Steel
  • Design: 4-1
  • Color/Finish: Painted Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: Flange
  • Collector Diameter: 3 in.
  • Emissions Legality: 49-State Legal - no CA shipments
  • Gaskets Included: Yes
  • Head Flange Style: Standard
  • Head Flange Thickness: 1/4 in.
  • Header Style: Long Tube
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1 5/8 in.
  • Primary Tube Thickness: 18 Gauge
  • Warranty: Lifetime Hedman limited warranty
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Fits the following Pontiac Grand LeMans Years

  • 1975-1976 | Base | 8 Cyl 7.5L
  • 1975-1977 | Base | 8 Cyl 5.7L
  • 1975-1977 | Base | 8 Cyl 6.6L
  • 1975-1977 | Safari | 8 Cyl 6.6L
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Pontiac Grand LeMans Exhaust Manifold, Dorman Driver Side Exhaust Manifold - Cast Iron, Direct Fit

$84.25 $99.42 You Save $15.17 (15%)
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DORMAN – OE REPLACEMENT EXHAUST MANIFOLDS

Swap out your warped exhaust manifold with this OE replacement exhaust manifold from Dorman. Its heavy-duty design is resistant to leaks and corrosion, and its secure fit ensures all gases are safely routed through your exhaust system. Since 1918, Dorman Products has supplied the automotive aftermarket with high-quality replacement parts, hardware and fasteners.

  • Anti-leak protection
  • Manufactured with cast iron or stainless tubular steel
  • Comes with gaskets and hardware needed for assembly (check application)
  • Brand SKU#: Dorman 674-197
  • Location: Driver Side
  • Material: Cast Iron
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: Same day - 1 business day
  • Aspiration Type: Naturally aspirated
  • Includes: Three studs, three nuts, and three lock washers
  • Numberof Cylinders: 8
  • Warranty: Lifetime Dorman limited warranty
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Fits the following Pontiac Grand LeMans Years

  • 1977 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978-1979 | Safari | 8 Cyl 5.7L
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Pontiac Grand LeMans Muffler, Walker SoundFX Muffler - Natural, Aluminized Steel, Minor Modifications

$32.35 $47.98 You Save $15.63 (33%)
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WALKER – SOUNDFX MUFFLERS

Shape your exhaust tone just right with the aluminized tube-and-partition structure of Walker’s SoundFX mufflers. Established in 1908, Walker is renowned in the automotive aftermarket for manufacturing a full line of exhaust system parts.

  • Engineered with tube-and-partition structure
  • Manufactured with rust-resistant, aluminized steel
  • Heads are firmly spun-locked to protect against breakage
  • Built for OE-quality function and sound
  • Spot-welded bushings and internal mechanical joints increase stability
  • Quick and simple to install
  • Brand SKU#: Walker 17889
  • Series: Walker SoundFX
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Attachment Style: Weld-On
  • Body Length: 18 in.
  • Case Shape: Oval
  • Height: 4.25 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: 2-tube design
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2 in.
  • Overall Length: 26 in.
  • Warranty: 90-day Walker limited warranty
  • Width: 8.81 in.
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Fits the following Pontiac Grand LeMans Years

  • 1975-1976 | Base | 8 Cyl 7.5L
  • 1975-1977 | Base | 8 Cyl 5.7L
  • 1975-1977 | Base | 8 Cyl 6.6L
  • 1975-1977 | Safari | 8 Cyl 6.6L
  • 1976 | Base | 6 Cyl 4.1L
  • 1976-1977 | Base | 8 Cyl 5.7L
  • 1976-1977 | LE | 8 Cyl 5.7L
  • 1977 | Base | 6 Cyl 3.8L
  • 1977 | Base | 8 Cyl 4.9L
  • 1977 | Base | 8 Cyl 5.0L
  • 1977 | Base | 8 Cyl 5.7L
  • 1977 | LE | 8 Cyl 5.7L
  • 1977 | Safari | 8 Cyl 4.9L
  • 1977 | Safari | 8 Cyl 5.7L
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Pontiac Grand LeMans Headers, Flowtech Long Tube Headers - Painted Black, Steel, 4-1, Direct Fit

$144.95 $171.04 You Save $26.09 (15%)
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FLOWTECH – LONG TUBE PERFORMANCE HEADERS

You can expect more power, torque and fuel efficiency after you bolt on a pair of Flowtech long tube performance headers. Designed and made to fit precisely, they feature leak-tested O-ring port seals and Mandrel-formed Power Plenums for low back pressure. You can improve the power and sound on your street machine with Flowtech’s wide range of performance exhaust products.

  • Includes mounting hardware and high-quality gaskets
  • Engineered and built to fit precisely for easy installation
  • Leak-tested O-ring port seals
  • Mandrel-formed, low back pressure Power Plenum
  • Add power and increase fuel efficiency at the same time
  • Brand SKU#: Flowtech 11104FLT
  • Series: Flowtech Long Tube
  • Material: Steel
  • Design: 4-1
  • Color/Finish: Painted Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 2
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 3-4 business days
  • Bolts Studs Included: Yes
  • Collector Attachment Style: Flanged
  • Collector Diameter: 3 in.
  • Gaskets Included: Yes
  • Head Flange Thickness: 5/16 in.
  • Header Style: Long Tube
  • Numberof Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1 1/2 in.
  • Primary Tube Wall Thickness: 16-Gauge
  • Warranty: 90-day Flowtech warranty
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Fits the following Pontiac Grand LeMans Years

  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1978-1980 | Base | 8 Cyl 5.0L
  • 1978-1980 | Safari | 8 Cyl 5.0L
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Pontiac Grand LeMans Exhaust Gasket, Mr Gasket Exhaust Gasket - High-Temperature Composite, Direct Fit

$14.90 $17.58 You Save $2.68 (15%)
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MR GASKET PERFORMANCE EXHAUST MANIFOLD GASKET SET -- 1.45 x 1.55 in. port dimensions; Large race square port; Fabricated from large-fiber gasket material bonded by a high-heat resistant compound; Provides excellent sealing and durability; Precision die cut for each application.
  • Brand SKU#: Mr Gasket 150A
  • Material: High-Temperature Composite
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 90-day Mr Gasket limited warranty

Fits the following Pontiac Grand LeMans Years

  • 1980 | Base | 8 Cyl 5.0L
  • 1980 | Safari | 8 Cyl 5.0L

Pontiac Grand LeMans Exhaust Manifold Gasket, Felpro Exhaust Manifold Gasket - Compressed fiber laminate, Direct Fit

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FELPRO EXHAUST MANIFOLD GASKET SET, COMPRESSED FIBER LAMINATE -- A high quality, OE replacement exhaust manifold gasket set.
  • Brand SKU#: Felpro MS9275B
  • Material: Compressed fiber laminate
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 6
  • Anticipated Ship Out Time: Same day - 1 business day
  • Port Type: Stock
  • Warranty: 1-year Felpro limited warranty
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Fits the following Pontiac Grand LeMans Years

  • 1976 | BR | 8 Cyl 5.0L
  • 1976-1977 | LE | 8 Cyl 5.7L
  • 1977-1978 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978 | Safari | 8 Cyl 5.0L
  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1979-1980 | Safari | 8 Cyl 5.0L
  • 1979-1981 | LE | 8 Cyl 4.4L
  • 1979-1983 | Base | 8 Cyl 5.0L
  • 1980-1982 | Base | 8 Cyl 4.4L
  • 1981 | LE | 8 Cyl 5.0L
  • 1981 | SA | 8 Cyl 4.4L
  • 1981 | SA | 8 Cyl 5.0L
  • 1982 | BR | 8 Cyl 4.4L
  • 1983 | BR | 8 Cyl 5.0L
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Pontiac Grand LeMans Header Bolt, Transdapt Header Bolt - Direct Fit

$12.59 $14.86 You Save $2.27 (15%)
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TRANSDAPT – HEADER BOLTS

Got some new headers? By all means, don’t re-use your corroded old header bolts when you can get some new Transdapt Header Bolts, all for a really low cost. Transdapt started in 1959 when founder Willie Garner created transmission adapters to be able to bring together engines and transmissions that were not made to work with each other in order to build the best performing custom cars. Through the years, Transdapt expanded and added carburetor adapters, engine swap kits and then a full line of chrome dress-up parts to add more style to your daily driver or your show car.

  • Available in standard 7/16 size or a smaller 3/8 size for use in tighter spaces
  • Grade 5 hardware rating
  • Perfect replacements for rusty and damaged old header bolts
  • Brand SKU#: Transdapt 8885
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 12
  • Anticipated Ship Out Time: 1-2 Business Days
  • Notes: Extra Small Head; Grade 5; 3/8-16 x 0.75; 3/8 in. Head
  • Warranty: 1-year TransDapt limited warranty

Fits the following Pontiac Grand LeMans Years

  • 1977-1980 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1978-1980 | Safari | 8 Cyl 5.0L
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Pontiac Grand LeMans Header Gasket, Hooker Header Gasket - Direct Fit

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$12.76 $15.06 You Save $2.30 (15%)
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HOOKER SUPER COMPETITION HEADER GASKET -- 0.070 Thick, Features Precision Fit For Improved Sealing, Substrate Construction Provides Superior Adhesion, Design Contributes To Exact Fit Between Cylinder Head And Header To Improve Exhaust Flow
  • Brand SKU#: Hooker 10808HKR
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 3-4 business days

Fits the following Pontiac Grand LeMans Years

  • 1977-1980 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1978-1980 | Safari | 8 Cyl 5.0L
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Pontiac Grand LeMans Exhaust Manifold Gasket, DNJ Exhaust Manifold Gasket - Direct Fit

$11.96 $14.11 You Save $2.15 (15%)
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DNJ EXHAUST MANIFOLD GASKETS, SET OF 6 -- A high quality, OE replacement exhaust manifold gasket set.
  • Brand SKU#: DNJ EG3101
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 6
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 1 year or 12,000-mile DNJ limited warranty

Fits the following Pontiac Grand LeMans Years

  • 1977-1978 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | Safari | 8 Cyl 5.0L
  • 1979-1980 | Base | 8 Cyl 5.0L
  • 1979-1980 | Safari | 8 Cyl 5.0L
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Pontiac Grand LeMans Exhaust Manifold Gasket, Edelbrock Exhaust Manifold Gasket - Direct Fit

$18.54 $21.88 You Save $3.34 (15%)
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Exhaust Manifold Gasket, Superior Seal And Fit, Durable Construction
  • Brand SKU#: Edelbrock 7281
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 4-5 business days

Fits the following Pontiac Grand LeMans Years

  • 1975-1976 | Base | 8 Cyl 7.5L

Pontiac Grand LeMans Header Gasket, Proform Header Gasket - Direct Fit

$30.63 $36.14 You Save $5.51 (15%)
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PROFORM SOFT CONFORMING ALUMINUM HEADER GASKET KIT, SQUARE PORT -- Excellent Gasket Construction Easily Conform To Collector Flanges For A Superior Seal, Comes With 2 Gaskets, With Manufacturer's Limited 30-Day Warranty
  • Brand SKU#: Proform 67921
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 2
  • Anticipated Ship Out Time: 1-2 Business Days

Fits the following Pontiac Grand LeMans Years

  • 1977-1980 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1978-1980 | Safari | 8 Cyl 5.0L
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Pontiac Grand LeMans Exhaust Manifold Gasket, Spectre Exhaust Manifold Gasket - Direct Fit

$21.98 $25.94 You Save $3.96 (15%)
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SPECTRE EXHAUST GASKET -- Direct Fit Replacement Part, Made Of Extra Thick 1/8" Compressed Ceramic Fiber That Far Exceeds Typical Non-Asbestos Type Gaskets, Will Not Deteriorate Or Crack From Excessive Heat Or Pressure, Provides Superior Sealing, Even On Uneven Or Warped Header Flanges, 1.5" Stock Round Port Included, With Manufacturer's Limited Warranty
  • Brand SKU#: Spectre 412
  • Product Fit: Direct Fit
  • Quantity Sold: 2-piece set
  • Anticipated Ship Out Time: Same day - 1 business day
  • Notes: Small Block Chevrolet 265-400; Stock, 1.50" diameter round ports, Extra thick 1/8" Compressed ceramic fiber (CCF)
  • Warranty: Spectre Limited Lifetime warranty

Fits the following Pontiac Grand LeMans Years

  • 1977-1980 | Base | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.0L
  • 1978 | SA | 8 Cyl 5.7L
  • 1978-1979 | Safari | 8 Cyl 5.7L
  • 1978-1980 | Safari | 8 Cyl 5.0L
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