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EFI Connection LLC

EFI Connection LLC

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Featured items

  • 48mm TPI LT1 Throttle Body Gasket Set (stock size)

    $14.99

  • Delphi Micro-Pack 100W Series Female Unsealed Terminal 12084912 25 PCS

    $16.70

  • Throttle Body ID Plate Die Cut Gasket (Gasket Only) GM TPI LT1 Made in U.S.A

    $7.50

  • 6L80E 6L90E T43 TCM Transmission Connector Pigtail

    $61.99

All items

EFI Connection LS1 OBDII Computer PCM ECU Terminals Pins 25PCS Corvette Camaro

$9.98

TXL Automotive Wire 10 AWG RED Bulk 25 ft Primary Copper

$25.80

EFI Connection TAC to Pedal Harness - Early Truck 4FT Length

$44.95

6L80E 6L90E T43 TCM Transmission Connector Pigtail

$61.99

A/C Compressor Clutch Connector Pigtail GM 85-08

$7.50

4L80E 4-Speed Automatic Transmission Pigtail GM 6.0L LQ4 (99-08)

$18.00

4L60E 4L80E Transmission Range Switch Pigtail GM 6.0L LQ4 (04-08)

$28.00

48mm TPI LT1 Throttle Body Gasket Set (stock size)

$14.99

EFI Connection Connector Kit for GM 700R4 Transmission

$12.50

Mass Air Flow MAF Sensor Pigtail GM 6.2L LS3 (08-17)

$9.50

Delphi Micro-Pack 100W Series Male Unsealed Terminal 12160551 (25 PCS)

$15.75

Fuel Pump and Level Sensor Pigtail GM 6.2L LS3 (10-15 Camaro)

$20.00

Throttle Body Pigtail GM 6.0L LQ9 (03-07)

$13.50

Vehicle Speed Sensor VSS Pigtail 700R4 T5 GM 5.7L TPI L98 (85-89)

$8.75

Engine Coolant Temperature Gauge Sending Unit Pigtail GM 5.7L TPI L98 (85-92)

$16.00

OBD-II Diagnostic Test Connector Pigtail GM CAN OBD2 OBDII

$11.99

Camshaft Position CMP Sensor Pigtail GM 5.7L LS1 (97-05)

$10.00

Delphi Metri-Pack 150 Series Male Sealed Terminal 12045773 (25 pcs)

$12.50

Accelerator Pedal Position APP Sensor Connector Kit GM 6.0L LS2 (05 Corvette)

$12.80

Delphi Micro-Pack 100 Series Female Unsealed Terminal 12146448 25 PCS

$13.00

Molex MX64 33467 Series Female Unsealed Terminal 0334670005 (50 Pieces)

$15.00

LS Gen III Engine Wiring Systems: 1997-2007

$36.95

Throttle Position Sensor TPS Pigtail GM 5.7L TPI L98 (85-92)

$10.00Save up to 20% when you buy more

Mass Air Flow MAF Sensor Connector Kit GM 5.7L LS1 (01-05)

$10.70

Throttle Body Pigtail GM 6.2L LS3 (08-17)

$12.00

700R4 Transmission Connector Pigtail Bundle VSS 1980s GM

$15.99

EFI Connection Aluminum Vortec Distributor Cap Made in U.S.A.

$28.00

Delphi Series 56 Female Unsealed Terminal 12124515 16 14 AWG Pack of 25

$15.00

Alternator (Generator) Pigtail GM 5.7L LT1 (92-96 Corvette)

$12.00

E85 Flex Fuel Composition Sensor Connector Kit GM

$10.70

EGR Valve Solenoid Pigtail GM 5.7L TPI L98 (85-89)

$8.75

Molex MX150 1.5 Female Unsealed Tin (Sn) 20-18 AWG Terminal 25PCS

$12.40

Engine Coolant Temperature ECT Sensor Connector Kit GM 6.0L LS2 (05-09)

$10.70

Ignition Control Module ICM Pigtail GM 5.7L LT1 (93-95)

$10.50

Delphi Metri-Pack 150 Female Unsealed Tin (Sn) 22-20 AWG Terminal 50PCS

$15.00

EFI Connection 1993 1994 Optispark Harness made with hi temp braid f-body vette

$15.00

Oil Level Switch Pigtail GM 5.7L LT1 (92-97)

$9.00

EFI Connection MAP Adapter Sensor Harness - LS3 LS7 to LS1 LS6 LS2 MAP Sensor

$24.00

NEW Ford 104 Pin EEC-V ECM PCM Computer Connector Assembly

$65.95

Molex MX64 33467 Series Female Unsealed Terminal 0334670005 (25 Pieces)

$14.00

4L80E Transmission Connector Pigtail Bundle ISS VSS 4L85E GM

$29.99

Ignition Control Module ICM Pigtail GM 5.7L LT1 (96-97)

$10.50

A/C Compressor Clutch Pigtail GM 5.7L LS1 (97-05)

$7.50

700R4 4-Speed Automatic Transmission Pigtail GM 5.0L TPI LB9 (85-92)

$15.00

Distributor Ignition Control Module ICM Pigtail 2 Wires GM 5.7L TPI LB9 (87-92)

$8.75

Camshaft Position CMP Sensor Pigtail GM 6.0L LS2 (06-09 Trailblazer SS)

$9.00

Throttle Actuator Control Module TAC Pigtail GM 6.0L LQ4 (03-08)

$35.00

Delphi Metri-Pack 150 Tangless Series Female Sealed Terminal 12176636 25 PCS

$13.50
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About us

We specialize in GM fuel injection systems for SBC, LT1, and the variety of LS engines. Since 2003 we have been manufacturing brand new fuel injection engine harnesses and connector pigtails for GM engines and offering replacement harness components for GM fuel injection harnesses.

Modernize Your Early SBC, TPI, or LT1/LT4 Engine
Our 24x systems and 58x systems bring Gen III LS1 PCM control and Gen IV LS3 ECM control to these popular engines. Our 24x solution is the only replacement to the troublesome LT1 optispark distributor and has enabled amazing potential for these engines; even 8,000 rpm capabilities!
Location: United StatesMember since: May 12, 2013Seller: eficonnectionllc
Top Rated SellerEFI Connection LLC is one of eBay's most reputable sellers. Consistently delivers outstanding customer service Learn more

Feedback ratings

Last 12 months

Positive473- positive feedback in last 12 months
Neutral5- neutral feedback in last 12 months
Negative3- negative feedback in last 12 months

Detailed seller ratings

Average for the last 12 months

Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (6,761)

u***d (32)- Feedback left by buyer.
Past 6 months
Verified purchase
Simple transaction, great communication, good price and quick delivery of OE quality auto wire
z***k (617)- Feedback left by buyer.
Past month
Verified purchase
Item As Described, Very Fast Shipping, AAA+++ Seller, Thanks !!!!!
e***e (602)- Feedback left by buyer.
Past month
Verified purchase
Item as advertised, came quick, A+ seller
e***h (1406)- Feedback left by buyer.
Past 6 months
Verified purchase
As described quick ship. Great EBay seller!
_***n (225)- Feedback left by buyer.
Past 6 months
Verified purchase
Great seller, part are always as listed, excellent shipping time.
r***e (336)- Feedback left by buyer.
Past 6 months
Verified purchase
Great price, fast shipping and great e'seller
See all feedback