Skip to main content
EFI Connection LLC

EFI Connection LLC

28K items sold
672 followers
Contact

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

Coolant Temperature Sending Unit Connector Pigtail GM 85-92

$9.99

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

$14.99

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

$9.98

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

$28.00

Throttle Position Sensor TPS Pigtail GM 5.7L LS1 (97-05)

$9.00

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

$20.00

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

$10.50

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

$28.00

EFI Connection Tesa Tape 51036 Single Roll

$11.99

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

$44.95

Delphi Metri-Pack 150.2 Series Female Unsealed Terminal 12103881 (25 pcs)

$13.75

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

$8.75

LSWiring CAN Bus 121 Ohm Termination Resistor Connector Kit 120 Ohm Equivalent

$26.49

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

$15.75

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

$14.00

OBD-II Diagnostic Test Connector Pigtail GM CAN OBD2 OBDII

$11.99

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

$9.50

700R4 4-Speed Automatic Transmission Pigtail GM 5.7L TPI L98 (85-92)

$12.95

Starter Adapter Harness 6 Inches for Many GM LS-Series Starters LS1 LS2 LS3 LS7

$35.00

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

$12.00

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

$15.00

EBCM Electronic Brake Control Module Pigtail 07-13 GM Truck 1500 10 series

$299.00

Camshaft Position CMP Sensor Pigtail GM 5.7L L31 (96-02)

$9.00

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

$12.80

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

$10.00

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

$13.50

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

$12.40

6L80E 6L90E T43 TCM Transmission Connector Pigtail

$61.99

Manifold Absolute Pressure MAP Sensor 18" Extension Harness 6.2L LS3 (08-17)

$30.00

Stock Billet Aluminum Timing Cover w/ckp for 96-97 LT1 Engine replaces 12550032

$395.00

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

$65.95

Starter Solenoid Pigtail GM 6.2L LS3 (08-17)

$13.00

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

Electronic Brake Control Module EBCM ABS Connector Kit Replaces GM 19178085

$39.99

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

$15.00

Yazaki YESC 1.5 Series Female Unsealed Terminal 7116-4100-02 Qty 25

$15.25

Delphi Micro 64 Series Female Unsealed Terminal 15356827 25 PCS

$15.75

700R4 Transmission Connector Pigtail Bundle VSS 1980s GM

$15.99

Ignition Coil Pigtail GM 5.7L LT1 (96-97)

$10.00

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

$10.70

OBD-I Diagnostic Connector Pigtail GM 5.7L TPI L98 (85-92)

$11.25

Delphi Metri-Pack 630 Pull-to-Seat Female Unsealed Terminal 12033997 (25 PCS)

$16.79

EFI Connection Connector Kit for GM 700R4 Transmission

$12.50

Knock KS Detonation Sensor 1 Pigtail GM 5.7L LT1 (92-97)

$8.50

Crankshaft Position CKP Sensor Pigtail GM 5.7L LT1 (96-97)

$9.00

4L60E 4-Speed Automatic Transmission Pigtail GM 5.7L LS1 (97-05)

$18.00

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

$10.00Save up to 20% when you buy more
Items Per Page
See All

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

Positive488- positive feedback in last 12 months
Neutral5- neutral feedback in last 12 months
Negative4- 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 (6,742)

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
e***e (602)- Feedback left by buyer.
Past month
Verified purchase
Item as advertised, came quick, A+ seller
e***h (1400)- Feedback left by buyer.
Past 6 months
Verified purchase
As described quick ship. Great EBay seller!
_***n (215)- Feedback left by buyer.
Past 6 months
Verified purchase
Great seller, part are always as listed, excellent shipping time.
r***e (334)- Feedback left by buyer.
Past 6 months
Verified purchase
Great price, fast shipping and great e'seller
u***l (1090)- Feedback left by buyer.
Past 6 months
Verified purchase
Good price, description, and got it fast.
See all feedback