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Southern Rods & Parts

Jam Nuts

QA1 offers steel jam nuts for industrial markets. Jam nuts are usually half the width of a standard nut and are commonly jammed up against a rod end or linkage tube to lock the two components into place. Available in both inch and metric dimensions.

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Holley EFI Benchtop Harness Firmware Updating - Dash Configuration - ECU Testing
Holley EFI Benchtop Harness Firmware Updating - Dash Configuration - ECU Testing
Part Number: 558-127
$231.95
Unterminated 15' Flying Lead Main Harness Pre-Terminated J1A / J1B 15' Flying Lead Main Harness
Unterminated 15' Flying Lead Main Harness Pre-Terminated J1A / J1B 15' Flying Lead Main Harness
Part Number: 558-126
$425.95
Holley EFI Ford Coyote Ti-VCT Sub Harness (2013-2017) Coyote Ti-VCT Sub Harness for 2013-2017 Coyote Engines with Stock Camshafts
Holley EFI Ford Coyote Ti-VCT Sub Harness (2013-2017) Coyote Ti-VCT Sub Harness for 2013-2017 Coyote Engines with Stock Camshafts
Part Number: 558-125
$399.95
Holley EFI Coyote Ti-VCT Main Harness for Holley EFI HP smart coils (2011-2017) Coyote Ti-VCT Main Harness for 2011-2017 Coyote Engines using Holley EFI HP smart coils
Holley EFI Coyote Ti-VCT Main Harness for Holley EFI HP smart coils (2011-2017) Coyote Ti-VCT Main Harness for 2011-2017 Coyote Engines using Holley EFI HP smart coils
Part Number: 558-122
$949.95
Terminator Stealth 2x4 MAIN HARNESS Easily convert from single to dual Terminator Stealth
Terminator Stealth 2x4 MAIN HARNESS Easily convert from single to dual Terminator Stealth
Part Number: 558-121
$499.95
Ford MPFI Coil On Plug Main Harness: Ford MPFI Coil On Plug Main Harness:
Ford MPFI Coil On Plug Main Harness: Ford MPFI Coil On Plug Main Harness:
Part Number: 558-118
$649.95
Universal MPFI Coil on Plug Main Harness UNIVERSAL MPFI W/ COP MAIN HARNESS
Universal MPFI Coil on Plug Main Harness UNIVERSAL MPFI W/ COP MAIN HARNESS
Part Number: 558-117
$599.95
Gen III HEMI Main Harness , Late, w/TPS and Idle Air Control Connections Gen III HEMI Main Harness w/Throttle Position Sensor & Idle Air Control, For Late Crank & Cam Sensors, for HP EFI & Dominator EFI, For use with Cable Throttle Body.
Gen III HEMI Main Harness , Late, w/TPS and Idle Air Control Connections Gen III HEMI Main Harness w/Throttle Position Sensor & Idle Air Control, For Late Crank & Cam Sensors, for HP EFI & Dominator EFI, For use with Cable Throttle Body.
Part Number: 558-116
$799.95
Gen III Hemi Main Harness, Early, w/ TPS and Idle Air Control Connections Gen III HEMI Main Harness w Throttle Position Sensor & Idle Air Control, For use with Cable Throttle Body.
Gen III Hemi Main Harness, Early, w/ TPS and Idle Air Control Connections Gen III HEMI Main Harness w Throttle Position Sensor & Idle Air Control, For use with Cable Throttle Body.
Part Number: 558-115
$467.95
Ford Modular 2V & 4V Main Harness for use with Holley Smart Coils Main Harness for 1999-2004 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
Ford Modular 2V & 4V Main Harness for use with Holley Smart Coils Main Harness for 1999-2004 2 & 4 Valve Ford Modular (4.6 & 5.4L) Engines for use with Holley Smart Coils
Part Number: 558-113
$899.95
MAIN ENGINE HARNESS FOR 58X LS W/TBI Main Harness for us with 58x/4x Gen 4 LS with Terminator Throttle Body Fuel Injection
MAIN ENGINE HARNESS FOR 58X LS W/TBI Main Harness for us with 58x/4x Gen 4 LS with Terminator Throttle Body Fuel Injection
Part Number: 558-112
$699.95
Main Engine Harness for 24x LS w/TBI Main Harness for us with 24x/1x Gen 3 LS with Terminator Throttle Body Fuel Injection
Main Engine Harness for 24x LS w/TBI Main Harness for us with 24x/1x Gen 3 LS with Terminator Throttle Body Fuel Injection
Part Number: 558-111
$699.95
Holley EFI Ford Coyote Engine Main Harness w/ Ti-VCT and stock coils (2011-2017) Coyote Engine Main Harness compatible with 2011-2017 Ti-VCT Coyote Engines
Holley EFI Ford Coyote Engine Main Harness w/ Ti-VCT and stock coils (2011-2017) Coyote Engine Main Harness compatible with 2011-2017 Ti-VCT Coyote Engines
Part Number: 558-110
$849.95
Ford 2V & 4V Modular Main Harness Ford 2V & 4V Modular Main Harness, For HP EFI & Dominator EFI
Ford 2V & 4V Modular Main Harness Ford 2V & 4V Modular Main Harness, For HP EFI & Dominator EFI
Part Number: 558-108
$799.95
Unterminated Universal Main Harness Unterminated Universal Main Harness for HP EFI & Dominator EFI
Unterminated Universal Main Harness Unterminated Universal Main Harness for HP EFI & Dominator EFI
Part Number: 558-105
$528.95
Universal MPFI Main Harness Universal MPFI Main Harness for HP EFI & Dominator EFI
Universal MPFI Main Harness Universal MPFI Main Harness for HP EFI & Dominator EFI
Part Number: 558-104
$528.95
LS2/3/7+ (58x/4x) Engine Main Harness LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI
LS2/3/7+ (58x/4x) Engine Main Harness LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI
Part Number: 558-103
$632.95
LS1/6 (24x/1x) Engine Main Harness LS1/6 Main Harness for HP EFI & Dominator EFI
LS1/6 (24x/1x) Engine Main Harness LS1/6 Main Harness for HP EFI & Dominator EFI
Part Number: 558-102
$632.95
TPI/Stealth Ram Main Harness TPI/Stealth Ram? Main Harness for Avenger EFI, HP EFI & Dominator EFI
TPI/Stealth Ram Main Harness TPI/Stealth Ram? Main Harness for Avenger EFI, HP EFI & Dominator EFI
Part Number: 558-101
$632.95
Holley EFI High Flow Dual Solenoid Boost Control Kit High Flow Boost Control Dual Solenoids
Holley EFI High Flow Dual Solenoid Boost Control Kit High Flow Boost Control Dual Solenoids
Part Number: 557-201
$449.95
3 Port Solenoid Valve 3 Port Boost Control Solenoid Valve
3 Port Solenoid Valve 3 Port Boost Control Solenoid Valve
Part Number: 557-200
$118.95
Solenoid/Nozzle 1000cc/min (800HP) Solenoid/Nozzle 1000cc/min (800HP)
Solenoid/Nozzle 1000cc/min (800HP) Solenoid/Nozzle 1000cc/min (800HP)
Part Number: 557-106
$449.95
Water Methanol Installation Kit Installation Kit
Water Methanol Installation Kit Installation Kit
Part Number: 557-101
$158.95
Water Methanol Pump High Pressure Water Methanol Pump
Water Methanol Pump High Pressure Water Methanol Pump
Part Number: 557-100
$226.95
6.25-Inch 12-1x Crank Trigger Wheel For SBC and LS
6.25-Inch 12-1x Crank Trigger Wheel For SBC and LS
Part Number: 556-185
$299.95
6.56-Inch 12-1x Crank Trigger Wheel
6.56-Inch 12-1x Crank Trigger Wheel
Part Number: 556-184
$299.95
6.56-Inch 12-1x Crank Trigger Wheel For Gen III and IV LS
6.56-Inch 12-1x Crank Trigger Wheel For Gen III and IV LS
Part Number: 556-183
$299.95
7.25-Inch 12-1x Crank Trigger Wheel For Gen III and IV LS
7.25-Inch 12-1x Crank Trigger Wheel For Gen III and IV LS
Part Number: 556-182
$299.95
7-Inch 12-1x Crank Trigger Wheel Universal
7-Inch 12-1x Crank Trigger Wheel Universal
Part Number: 556-181
$299.95
8-Inch 12-1X Crank Trigger Wheel Universal
8-Inch 12-1X Crank Trigger Wheel Universal
Part Number: 556-180
$299.95
6.56-Inch 12-1X Crank Trigger Kit, LS, Hall Effect
6.56-Inch 12-1X Crank Trigger Kit, LS, Hall Effect
Part Number: 556-176
$649.95
7.25-Inch 12-1X Crank Trigger Kit, LS, Hall Effect For Gen III and IV LS
7.25-Inch 12-1X Crank Trigger Kit, LS, Hall Effect For Gen III and IV LS
Part Number: 556-175
$649.95
8-Inch 12-1X Crank Trigger Kit, LS, Hall Effect For Gen III and IV LS
8-Inch 12-1X Crank Trigger Kit, LS, Hall Effect For Gen III and IV LS
Part Number: 556-174
$649.95
7-Inch 12-1X Crank Trigger Kit, Coyote, Hall Effect For Coyote, Requires Custom Ignition Type in Holley EFI Software.
7-Inch 12-1X Crank Trigger Kit, Coyote, Hall Effect For Coyote, Requires Custom Ignition Type in Holley EFI Software.
Part Number: 556-173
$749.95
6.56-Inch 12-1X Crank Trigger Kit, SBF, Hall Effect For Small Block Ford
6.56-Inch 12-1X Crank Trigger Kit, SBF, Hall Effect For Small Block Ford
Part Number: 556-172
$649.95
7-Inch 12-1X Crank Trigger Kit, SBC, Hall Effect For Small Block Chevrolet
7-Inch 12-1X Crank Trigger Kit, SBC, Hall Effect For Small Block Chevrolet
Part Number: 556-171
$649.95
8-Inch 12-1X Crank Trigger Kit, BBC, Hall Effect For Big Block Chevrolet
8-Inch 12-1X Crank Trigger Kit, BBC, Hall Effect For Big Block Chevrolet
Part Number: 556-170
$649.95
HOLLEY EFI GEN III HEMI SMART COILS Black, 8-Pack
HOLLEY EFI GEN III HEMI SMART COILS Black, 8-Pack
Part Number: 556-163
$456.95
HOLLEY EFI GENIII HEMI SMART COILS Black, Single Coil
HOLLEY EFI GENIII HEMI SMART COILS Black, Single Coil
Part Number: 556-162
$58.95
HOLLEY EFI COYOTE SMART COIL Black, 8-Pack
HOLLEY EFI COYOTE SMART COIL Black, 8-Pack
Part Number: 556-161
$799.95
SNIPER EFI HYPERSPARK CD IGNITION BOX - SERVICE HARNESS
SNIPER EFI HYPERSPARK CD IGNITION BOX - SERVICE HARNESS
Part Number: 556-156
$33.63
Sniper EFI Canister Ignition Coil Black
Sniper EFI Canister Ignition Coil Black
Part Number: 556-153
$63.05
Sniper EFI HyperSpark Ignition Coil Ignition Coil
Sniper EFI HyperSpark Ignition Coil Ignition Coil
Part Number: 556-152
$61.19
Big Wire Coil-Near-Plug Smart Coil Kit HOLLEY SMART COIL ? HIGH HORSEPOWER C-N-P V8 KIT
Big Wire Coil-Near-Plug Smart Coil Kit HOLLEY SMART COIL ? HIGH HORSEPOWER C-N-P V8 KIT
Part Number: 556-128
$749.95
Coil-Near-Plug Smart Coil Kit HOLLEY SMART COIL - C-N-P V8 KIT
Coil-Near-Plug Smart Coil Kit HOLLEY SMART COIL - C-N-P V8 KIT
Part Number: 556-127
$699.95
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