International L121 Engine Parts

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International L121

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International L121

Products

Quick Fuel 3-204QFT Performance Carburetor Rebuild Kit, 4150/4150 H.P.

Quick Fuel Technology |

#4243204QFT

Quick Fuel 3-204QFT Performance Carburetor Rebuild Kit, 4150/4150 H.P.

(2)

Gasket(s) Included:

Yes

Sold in Quantity:

Kit

$112.95

/each

Turbosmart |

#37516262VB

Turbosmart TS-1-6262VB082E Turbocharger, Reverse, 6262, V-Band

$1,899.95

/each

Quick Fuel 38-1000QFT Quick Change Secondary Diaphragm & Spring Kit

Quick Fuel Technology |

#424381000QFT

Quick Fuel 38-1000QFT Quick Change Secondary Diaphragm & Spring Kit

GTIN Code:

849804012501

$39.92

/each

$119 Off

Racepak |

#425250DSIQ3SL

Racepak 250-DS-IQ3SL Street Logger Dash, Built-In Data Logger

Data Logger:

Yes

Customizable Display:

Yes

Gauge Panel Included:

Yes

$1,849.95

/each

$1,968.95

$122 Off

Racepak |

#425250KTIQ3SGPS

Racepak 250-KT-IQ3SGPS IQ3S Street Dash Bundle with GPS Sensor

Customizable Display:

Yes

Gauge Panel Included:

Yes

Gauge Panel Material:

Plastic

$1,699.95

/each

$1,821.95

LT1 Engine Build Combinations | Recipes for 400–700+ HP

Build a high-performance Gen V LT engine with proven power combos and learn about LT upgrades and tuning tips for maximum power

Gen III/IV LS Engine ID Guide

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

Historic Indy Engines

To celebrate the upcoming 106th running of the Indianaplis 500, here's a look back at a few of the engines that have competed at the Brickyard over the years.

Pick a Side: LS Engines

The GM LS engine is the hot powerplant these days. But is there too much of a good thing?

Engine Cylinder Numbers

Chevy L79 327 Engine I History, Specs, & Build Ideas

The 1964 Corvette L79 327 is legendary, learn more about this storied engine and what you need to build a clone.

Corvette L76 327 Engine History, Specs, and Build Ideas

The 1964 Corvette L76 327 is legendary, learn more about this storied engine and what you need to build a clone.

Building up an LT1

In this Tech Tip, John discusses LT1 rotating assembly options for a customer looking to build a solid autoX, drag, and occasional strip powerplant for his Firebird.

Speedway Tech Talk - LS1 Fuel Delivery Kit

Pat talks about one of our LS1 fuel delivery kits.

-7%

Earls |

#425178008ERL

Earls 178008ERL Stat-O-Seal, 1/2 Inch Diameter, Fits -5 AN Fitting

(1)

Fitting Size 1:

-5 AN

AN Size:

-5 AN

Inside Diameter:

0.5"

$11.91

/pair

$12.88

-7%

NOS 17835NOS Specialty Y Fitting, -6 AN x -6 AN x -6 AN, Blue

NOS |

#42517835NOS

NOS 17835NOS Specialty Y Fitting, -6 AN x -6 AN x -6 AN, Blue

Fitting End A:

-6 AN Male

Fitting End B:

-6 AN Male

Material Type:

Aluminum

$83.15

/each

$89.95

Holley |

#425080783C

Holley 0-80783C 650 CFM Classic Holley Carburetor

(1)

Carburetor Barrels:

4-Barrel

Fuel Type:

Gasoline

Choke Type:

Electric

$749.95

/each

$100 Off

Holley |

#4254777CE

Holley 0-4777CE 650 CFM Classic Double Pumper Carb Electric Choke

(1)

Carburetor Barrels:

4-Barrel

Fuel Type:

Gasoline

Choke Type:

Electric

$799.95

/each

$899.95

-7%

Earls |

#425300124ERL

Earls 300124ERL Auto-Fit Hose End, AN24, Red/Blue, Straight

Fitting Hose Size:

-24 AN

Fitting End A:

-24 AN Female

Fitting End B:

-24 AN Hose

$184.95

/each

$200.95

$807 Off

Holley |

#42520190BK

Holley 20-190BK Premium Mid-Mount LS7 Complete Accessory System

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Billet Aluminum

Water Pump Included:

Yes

$3,749.95

/each

$4,556.95

$905 Off

Holley |

#42520200P

Holley 20-200P Premium Mid-Mount Complete Accessory System, LT

Crankshaft Pulley Included:

Yes

Crankshaft Pulley Material:

Billet Aluminum

Water Pump Included:

Yes

$4,399.95

/each

$5,304.95

$107 Off

Holley |

#42520224BK

Holley 20-224BK 150 Amp Alternator w/Bracket Kit, LT4 Wet-Sump

Pulley Style:

Serpentine

Crankshaft Pulley Included:

Water Pump Included:

$1,749.95

/kit

$1,856.95

-7%

Earls |

#425100160ERL

Earls 100160ERL Distribution Block, -8 O-Ring to -6 O-Ring

Fitting End A:

8 AN FEMALE

Fitting End B:

6 AN Female

Fitting End C:

6 AN Female

$59.89

/each

$64.95

$150 Off

Holley Sniper |

#425550510BPD

Holley Sniper 550-510-BPD 4-barrel Self-Tuning EFI Conversion Kit

Injection Style:

Throttle Body

Injector Size:

100 lb/hr @ 58.5 PSI

Max Horsepower Rating:

650

$2,099.95

/kit

$2,249.95

-7%

Earls |

#425169212ERL

Earls 169212ERL Conical Seal Package Of 2, Size -12

AN Size:

-12 AN

Material Type:

Aluminum

$28.36

/pair

$30.68

$163 Off

Holley Sniper |

#4255505103PD

Holley Sniper 2 550-510-3PD Returnless EFI Kit, Polished

Injection Style:

Throttle Body

Injector Size:

100 lb/hr

Max Horsepower Rating:

650

$2,199.95

/each

$2,362.95

-5%

Hooker Headers |

#42518510

Hooker Headers Blackheart LS Turbo Manifold Kits

Header Tube Type:

Turbo

Material Type:

Stainless Steel

Hardware Included:

Yes

$849.95

/pair

$899.95

-7%

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

Hooker Headers |

#4252001HKR

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

(1)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Round

Flange Style:

Standard

$675.95

/set

$731.95

-7%

Racepak |

#425220VMAF1

Racepak 220-VM-AF1 Single Channel Wideband Controller

Voltage Range:

0-5 V

Sold in Quantity:

Kit

$531.95

/kit

$575.95

-8%

Earls |

Fitting Hose Size:

-6 AN

Fitting End A:

-6 AN Female

Fitting End B:

-6 AN Hose

$33.24

/each

$35.96

$279 Off

Holley |

#42520-242BK

Holley 20-242BK BBC Mid-Mount Complete Accessory System, Black

Hardware Included:

Yes

Sold in Quantity:

Kit

$2,199.95

/kit

$2,478.95

-7%

Racepak |

#425250DSIQ3

Racepak 250-DS-IQ3 IQ3 Digital Display Dash, 28 Input, 4 pages

Customizable Display:

Yes

Gauge Panel Included:

Yes

Gauge Panel Material:

Plastic

$799.95

/each

$863.95

$132 Off

Racepak |

#425250DSIQ3D

Racepak 250-DS-IQ3D IQ3D Drag Data Logger Dash

Data Logger:

Yes

Customizable Display:

Yes

Gauge Panel Included:

Yes

$1,949.95

/each

$2,081.95

Holley |

#425347BK

Holley 34-7BK Black Needle & Seat Adjusting Nut & Lock Screw Kit

Adjustable:

Yes

Material Type:

Steel

Finish:

Black

$13.41

/each

$157 Off

Holley Sniper |

#4255505103PXSBF

Holley Sniper 2 550-510-3PX-SBF EFI Bundle w/ HyperSpark Ign. SBF

Injection Style:

Throttle Body

Injector Size:

100 lb/hr

Max Horsepower Rating:

650

$2,149.95

/kit

$2,306.95

Holley |

#425300630BK

Holley 300-630BK LS Lo-Ram 105mm Throttle Body Adapter, Black

Bore Size:

105 mm

Color:

Black

$519.95

/each

-7%

Earls |

#425178006ERL

Earls 178006ERL Stat-O-Seal, 3/8 Inch Diameter, Fits -3 AN Fitting

(3)

Fitting Size 1:

3/8"

AN Size:

-3 AN

Inside Diameter:

0.375"

$8.91

/pair

$9.64

-11%

Flowtech 11704-2FLT SB Chevy Rams Horn Exhaust Manifold, Chrome Finish

Flowtech Exhaust |

#425117042FLT

Flowtech 11704-2FLT SB Chevy Rams Horn Exhaust Manifold, Chrome Finish

Finish:

Chrome

Sold in Quantity:

Pair

$562.95

/set

$633.95

Flowtech 11704-RFLT SB Chevy Rams Horn Exhaust Manifold, Uncoated

Flowtech Exhaust |

#42511704RFLT

Flowtech 11704-RFLT SB Chevy Rams Horn Exhaust Manifold, Uncoated

(2)

Finish:

Natural

Sold in Quantity:

Pair

$234.95

/set

Flowtech 11000FLT Universal Block Hugger Header, 1.625 Inch Tube Size

Flowtech Exhaust |

#42511000FLT

Flowtech 11000FLT Universal Block Hugger Header, 1.625 Inch Tube Size

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Round

Flange Style:

Standard

$194.95

/each

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International L121 Engine Parts

Year

Subcategory

Part

Brand

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

Quick Fuel 3-204QFT Performance Carburetor Rebuild Kit, 4150/4150 H.P.

Turbosmart TS-1-6262VB082E Turbocharger, Reverse, 6262, V-Band

Quick Fuel 38-1000QFT Quick Change Secondary Diaphragm & Spring Kit

Racepak 250-DS-IQ3SL Street Logger Dash, Built-In Data Logger

Racepak 250-KT-IQ3SGPS IQ3S Street Dash Bundle with GPS Sensor

Related Articles

Earls 178008ERL Stat-O-Seal, 1/2 Inch Diameter, Fits -5 AN Fitting

NOS 17835NOS Specialty Y Fitting, -6 AN x -6 AN x -6 AN, Blue

Holley 0-80783C 650 CFM Classic Holley Carburetor

Holley 0-4777CE 650 CFM Classic Double Pumper Carb Electric Choke

Earls 300124ERL Auto-Fit Hose End, AN24, Red/Blue, Straight

Holley 20-190BK Premium Mid-Mount LS7 Complete Accessory System

Holley 20-200P Premium Mid-Mount Complete Accessory System, LT

Holley 20-224BK 150 Amp Alternator w/Bracket Kit, LT4 Wet-Sump

Earls 100160ERL Distribution Block, -8 O-Ring to -6 O-Ring

Holley Sniper 550-510-BPD 4-barrel Self-Tuning EFI Conversion Kit

Earls 169212ERL Conical Seal Package Of 2, Size -12

Holley Sniper 2 550-510-3PD Returnless EFI Kit, Polished

Hooker Headers Blackheart LS Turbo Manifold Kits

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

Racepak 220-VM-AF1 Single Channel Wideband Controller

Earls 400ERL UltraPro Oil Cooler Mounting Brackets, Wide Coolers

Racepak 200-KT-V500SD1S Serialized Data Logger, Door Car Harness

Racepak 200-KT-V300SD1G Generic Data Logger, Door Car Harness

Racepak 200-KT-V300SD1S Serialized Data Logger, Door Car Harness

Racepak 200-KT-V300SD2G Generic Data Logger, Universal Harness

Earls 309106ERL Auto Fit Female Hose End, 90 Degree, -6 AN to -6 AN

Holley 20-242BK BBC Mid-Mount Complete Accessory System, Black

Racepak 250-DS-IQ3 IQ3 Digital Display Dash, 28 Input, 4 pages

Racepak 250-DS-IQ3D IQ3D Drag Data Logger Dash

Holley 34-7BK Black Needle & Seat Adjusting Nut & Lock Screw Kit

Holley Sniper 2 550-510-3PX-SBF EFI Bundle w/ HyperSpark Ign. SBF

Holley 300-630BK LS Lo-Ram 105mm Throttle Body Adapter, Black

Earls 178006ERL Stat-O-Seal, 3/8 Inch Diameter, Fits -3 AN Fitting

Flowtech 11704-2FLT SB Chevy Rams Horn Exhaust Manifold, Chrome Finish

Flowtech 11704-RFLT SB Chevy Rams Horn Exhaust Manifold, Uncoated

Flowtech 11000FLT Universal Block Hugger Header, 1.625 Inch Tube Size