Speedway Motors Mercury Custom Engine Parts

Get an exact fit for your

Mercury Custom

Year

Choose Year

Year

Make

Choose Make

Make

Model

Choose Model

Model

1,172 products

Sort By:

Clear All

Fitment

Mercury Custom

Products

Universal Forward Facing LS Turbo Headers, Polished Stainless

Speedway Motors |

#93001030

Universal Forward Facing LS Turbo Headers, Polished Stainless

(3)

Header Tube Type:

Turbo

Exhaust Port Shape:

Round

Flange Style:

Round Port

$315.99

/pair

ZZ-4 Tight-Fit Small Block Chevy Block Hugger Headers, Raw Finish

Speedway Motors |

#9300104

ZZ-4 Tight-Fit Small Block Chevy Block Hugger Headers, Raw Finish

(2)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Oval

Flange Style:

Standard

$219.99

/pair

Small Block Chevy Lake Style Headers, Chrome

Speedway Motors |

#9300550C

Small Block Chevy Lake Style Headers, Chrome

Header Tube Type:

Lake Style

Exhaust Port Shape:

Round

Flange Style:

Standard

$559.99

/set

Small Block Chevy Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

Speedway Motors |

#9300559

Small Block Chevy Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

(21)

Header Tube Type:

Lake Style

Exhaust Port Shape:

Round

Flange Style:

Standard

$252.99

/set

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

Speedway Motors |

#9300566

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

(3)

Header Tube Type:

Lake Style

Exhaust Port Shape:

Round

Flange Style:

Standard

$343.99

/set

Speedway Motors to Celebrate Customers and their Cars with Customer Appreciation Week

Speedway Motors announced today they will celebrate customers and their cars during Customer Appreciation Week, August 28-September 1, with customer stories, a build list giveaway and Buy Now, Save Later promotion.

Built With Speedway Motors: Mike's 1969 Mercury Cyclone Spoiler II

Mike's Cyclone was a rare bird when it left the factory, and it's led an amazing life since then! Mike's goal is to go 200 at Bonneville in a car that has done Hot Rod Power Tour and has logged a ton of street miles...

1949 Mercury Drag Car by Precision Designs

This drag and drive '49 Mercury is not at all what you'd expect from a chopped Merc. It's part custom, part hot rod, and built to do it all.

Mick's 1950 Mercury Custom

Mick Rau has a garage full of cool cars, but this Hirohata-inspired Merc is a standout.

Speedway Motors Introduces New IMCA Modified Spec Racing Engine as they Kick Off 2025 Race Season

Speedway Motors announced today the introduction of a new IMCA Modified Spec Racing Engine as they kick off the 2025 race season along with discounts Jan. 27-Feb. 2 to help their customers get ready for race season.

Speedway Motors to Debut New Products at 53rd Annual Street Rod Nationals

Speedway Motors announced today a list of new products that will be debuted Aug. 4-7 at National Street Rod Association’s (NSRA) 53rd Annual Street Rod Nationals in Louisville, Ky.

On the Dyno at Speedway Motors Racing Engines

The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.

Speedway Tech Talk - LS Engine Mounts

Pat talks about some of the LS engine mounts Speedway Motors has to offer.

Speedway Motors to Celebrate Customers, 70th Anniversary

Speedway Motors announced today they will celebrate their customers and 70th Anniversary during Customer Appreciation Week, July 25-31, with discounts, giveaways and Cars & Coffee celebration.

Speedway Racing Engines Shop Tour

On Day Four of Racer Appreciation Week, the Speedway Motors team visited the shop of Speedway Racing Engines for a tour.

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 4 Inch Cone

Speedway Motors |

#9300567

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 4 Inch Cone

(2)

Header Tube Type:

Lake Style

Exhaust Port Shape:

Round

Flange Style:

Standard

$311.99

/set

Small Block Chevy V8 Polished Stainless Steel Shotgun Headers

Speedway Motors |

#9301100

Small Block Chevy V8 Polished Stainless Steel Shotgun Headers

(9)

Header Tube Type:

Roadster

Exhaust Port Shape:

Oval

Flange Style:

Standard

$999.99

/set

Boom Tubes Small Block Chevy Zoomie Header Kit, 1-3/4 Inch, Raw Finish

Speedway Motors |

#9301699

Boom Tubes Small Block Chevy Zoomie Header Kit, 1-3/4 Inch, Raw Finish

(18)

Header Tube Type:

Zoomie

Exhaust Port Shape:

Oval

Flange Style:

Standard

$124.99

/each

Speedway 90 Degree Bulkhead Fitting Kit, -6 AN, Blue

Speedway Motors |

#9108358

Speedway 90 Degree Bulkhead Fitting Kit, -6 AN, Blue

(4)

AN Size:

-6 AN

Angle:

90 degree

Fitting End A:

-6 AN Male

$20.99

/kit

90 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

Speedway Motors |

#6176088

90 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

(1)

Fitting End A:

-10 AN Male

Fitting End B:

1/2" NPT Male

Angle:

90 degree

$21.99

/each

Speedway Motors |

#6173303

Steel AN3 90 Degree Bulkhead Fitting

(2)

AN Size:

-3 AN

Angle:

90 degree

Fitting End A:

-3 AN Male

$14.99

/each

-70%

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

Speedway Motors |

#6173466

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

AN Size:

-10 AN

Material Type:

Rubber

Fitting Size 1:

-10 AN 0.755

$7.49

/bag

$25.42

Speedway Replacement Nitrile O-Rings for -8 AN Fittings, Pack/10

Speedway Motors |

#6173475

Speedway Replacement Nitrile O-Rings for -8 AN Fittings, Pack/10

(1)

AN Size:

-8 AN

Material Type:

Nitrile Rubber Composite

Fitting Size 1:

-8 AN 0.644

$3.99

/bag

Engine Lever, Four Point Mount, 1,500 Lb and SBC Engine Stand

Speedway Motors |

#9102605

Engine Lever, Four Point Mount, 1,500 Lb and SBC Engine Stand

Material Type:

Steel

Finish:

Powder Coated

$130.99

/kit

Aluminum -16 AN Flare Fitting Cap, Blue Anodized

Speedway Motors |

#6176200

Aluminum -16 AN Flare Fitting Cap, Blue Anodized

Material Type:

Aluminum

Color:

Blue

$14.49

/each

Speedway Motors |

#472700198BB

-8 Male to 3/8" male NPT With 1/8" NPT

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Fitting End C:

1/8" NPT Female

$13.49

/each

401-425 Nailhead Buick Weld-In Motor Mounts

Speedway Motors |

#7204502

401-425 Nailhead Buick Weld-In Motor Mounts

(1)

Attachment Style:

Bolt-on

Mount Material:

Steel

Bushing Material:

Polyurethane

$125.99

/pair

Speedway Ford Flathead V8 Center Dump Headers, AHC

Speedway Motors |

#91013601H

Speedway Ford Flathead V8 Center Dump Headers, AHC

(9)

Header Tube Type:

Shorty

Exhaust Port Shape:

Round

Flange Style:

Standard

$389.99

/pair

Speedway Motors |

#91017113

Chevy Bow Tie Wing Nut

(7)

Thread Pitch:

1/4"-20

Sold in Quantity:

Each

$16.49

/each

Blue Straight AN6 Flare Adapter to 1/4 Inch Aluminum Pipe Fitting

Speedway Motors |

#6176044

Blue Straight AN6 Flare Adapter to 1/4 Inch Aluminum Pipe Fitting

(6)

Fitting End A:

-6 AN Male

Fitting End B:

1/4" NPT Male

Angle:

Straight

$9.09

/each

Straight High-Flow O-Ring -8 AN Hose to -8 AN Port Fitting

Speedway Motors |

#6177013

Straight High-Flow O-Ring -8 AN Hose to -8 AN Port Fitting

(1)

Fitting End A:

-8 AN Male

Fitting End B:

-8 AN Male o-ring

Angle:

Straight

$13.99

/each

Nickel Straight to Aluminum Pipe Adapter Fitting -6 AN to 1/8 Inch NPT

Speedway Motors |

#61760450

Nickel Straight to Aluminum Pipe Adapter Fitting -6 AN to 1/8 Inch NPT

(3)

Fitting End A:

-6 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$7.99

/each

Straight High-Flow O-Ring -8 AN Hose to -10 AN Port Fitting

Speedway Motors |

#6177014

Straight High-Flow O-Ring -8 AN Hose to -10 AN Port Fitting

(2)

Fitting End A:

-8 AN Male

Fitting End B:

-10 AN Male O-ring

Angle:

Straight

$17.99

/each

Straight High-Flow O-Ring -10 AN Hose to -8 AN Port Fitting

Speedway Motors |

#6177015

Straight High-Flow O-Ring -10 AN Hose to -8 AN Port Fitting

Fitting End A:

-10 AN Male

Fitting End B:

-8 AN Male o-ring

Angle:

Straight

$19.49

/each

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Speedway Motors |

#61760520

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Fitting End A:

-12 AN Male

Fitting End B:

1/2" NPT Male

Angle:

Straight

$15.99

/each

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

Speedway Motors |

#91740080

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

Sold in Quantity:

Each

Amperage:

40 amps

$39.99

/each

FiTech Ultimate LS EFI Kit, with MSD Coils/ACCEL Spark Plug Wires

Speedway Motors |

#9109810

FiTech Ultimate LS EFI Kit, with MSD Coils/ACCEL Spark Plug Wires

Injection Style:

Sequential multi-port

Injector Size:

36 lbs./hr.

Max Horsepower Rating:

500

$2,497.99

/kit

Speedway Motors |

#91281032

Industrial Tap, 3/8 Inch-24 SAE

(5)

Thread Pitch:

3/8"-24

Drill Bit Included:

Material Type:

Steel

$21.99

/each

Speedway Motors |

#91281034

Industrial Tap, 1/2 Inch-20 SAE

(2)

Thread Pitch:

1/2"-20

Drill Bit Included:

Material Type:

Steel

$25.99

/each

Speedway Motors |

#1355355

1953-55 Dodge Hemi Engine Mount

(10)

Attachment Style:

Bolt-on

Mount Material:

Steel

$122.99

/each

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

Speedway Motors |

#6176080

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

(3)

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

90 degree

$15.99

/each

Black Straight -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760411

Black Straight -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

(1)

Fitting End A:

-3 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$9.99

/each

Black Straight -4 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760421

Black Straight -4 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

(2)

Fitting End A:

-4 AN Male

Fitting End B:

1/8" NPT Male

Angle:

Straight

$8.99

/each

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

Speedway Motors |

#61760480

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

(1)

Fitting End A:

-8 AN Male

Fitting End B:

3/8" NPT Male

Angle:

Straight

$13.99

/each

Black Straight -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Speedway Motors |

#61760501

Black Straight -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

(2)

Fitting End A:

-10 AN Male

Fitting End B:

1/2" NPT Male

Angle:

Straight

$13.99

/each

Power Steering Fitting, AN6 to 5/8-18 O-ring

Speedway Motors |

#6174803

Power Steering Fitting, AN6 to 5/8-18 O-ring

(6)

Fitting End A:

-6 AN Male

Fitting End B:

5/8"-18 Male O-ring

Angle:

Straight

$7.49

/each

Showing 1 - 216 of 1,172 results

Shop Feedback:

Did you find what you are looking for?

Speedway Motors Mercury Custom Engine Parts

Year

Subcategory

Part

Brand

Product Line

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

Universal Forward Facing LS Turbo Headers, Polished Stainless

ZZ-4 Tight-Fit Small Block Chevy Block Hugger Headers, Raw Finish

Small Block Chevy Lake Style Headers, Chrome

Small Block Chevy Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 3-1/2 Inch Cone

Related Articles

GM LS1 Lake Style Header Kit, 1-5/8 Tube, 4 Inch Cone

Small Block Chevy V8 Polished Stainless Steel Shotgun Headers

Boom Tubes Small Block Chevy Zoomie Header Kit, 1-3/4 Inch, Raw Finish

Speedway 90 Degree Bulkhead Fitting Kit, -6 AN, Blue

90 Degree Flare Adaptor, AN10 to 1/2 Inch NPT

Steel AN3 90 Degree Bulkhead Fitting

Speedway Replacement EPR2 O-Rings for -10 AN Fittings, Pack/5

Speedway Replacement Nitrile O-Rings for -8 AN Fittings, Pack/10

Engine Lever, Four Point Mount, 1,500 Lb and SBC Engine Stand

Aluminum -16 AN Flare Fitting Cap, Blue Anodized

-8 Male to 3/8" male NPT With 1/8" NPT

401-425 Nailhead Buick Weld-In Motor Mounts

Speedway Ford Flathead V8 Center Dump Headers, AHC

Chevy Bow Tie Wing Nut

Blue Straight AN6 Flare Adapter to 1/4 Inch Aluminum Pipe Fitting

Straight High-Flow O-Ring -8 AN Hose to -8 AN Port Fitting

Nickel Straight to Aluminum Pipe Adapter Fitting -6 AN to 1/8 Inch NPT

Straight High-Flow O-Ring -8 AN Hose to -10 AN Port Fitting

Straight High-Flow O-Ring -10 AN Hose to -8 AN Port Fitting

Nickel Straight to Aluminum Pipe Adapter Fitting, -12 AN to 1/2 In NPT

Fan Relay Harness Kit, Single Or Dual Fan Application Up To 40AMP

FiTech Ultimate LS EFI Kit, with MSD Coils/ACCEL Spark Plug Wires

Industrial Tap, 3/8 Inch-24 SAE

Industrial Tap, 1/2 Inch-20 SAE

1953-55 Dodge Hemi Engine Mount

90 Degree Flare Adaptor, AN4 to 1/8 Inch NPT

Black Straight -3 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Black Straight -4 AN Flare to 1/8 Inch NPT Pipe Adapter Fitting

Nickel Straight to Aluminum Pipe Adapter Fitting -8 AN to 3/8 Inch NPT

Black Straight -10 AN Flare to 1/2 Inch NPT Pipe Adapter Fitting

Power Steering Fitting, AN6 to 5/8-18 O-ring