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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

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

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

$28.00

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

$28.00

Coolant Temperature Sending Unit Connector Pigtail GM 85-92

$9.99

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

$12.95

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

$26.49

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

$9.00

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

$35.00

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

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

$9.50

Vortec Crankshaft Sensor Plug & Bolt Kit Billet Aluminum - 4.3 V6 V8 SBC LT1

$29.99

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

$9.00

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

$13.50

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

$44.95

EFI Connection Tesa Tape 51036 Single Roll

$11.99

EFI Connection Connector Kit for GM 700R4 Transmission

$12.50

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

$30.00

OBD-II Diagnostic Test Connector Pigtail GM CAN OBD2 OBDII

$11.99

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

$15.00

Yazaki YESC 2.8 Series Female Sealed Terminal 7116-4152-02 (25 PCS)

$14.25

700R4 Transmission Connector Pigtail Bundle VSS 1980s GM

$15.99

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

$395.00

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

$16.79

Delphi Micro 64 Series Female Unsealed Terminal 15356827 25 PCS

$15.75

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

$15.00

Molex MX64 34230 Series Female Unsealed Terminal 34230-0003 Qty 25

$13.75

Molex MX64 33467 Series Female Unsealed Terminal 0334670003 (25 pcs)

$13.50

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

$13.00

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

$35.00

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

$8.50

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

$15.25

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

$10.00

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

$12.60

Delphi GT 150 Series Female Unsealed Terminal 12191811 (25 Pieces)

$14.50

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

$65.95

LS Gen III Engine Wiring Systems: 1997-2007

$36.95

Delphi GT 150 3.5mm Centerline Series Female Sealed Terminal 15326266 (25 PCS)

$13.00

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

$12.00

E85 Flex Fuel Composition Sensor Connector Kit GM

$10.70

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

$15.00

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

$11.25

Delphi Metri-Pack 150 Series Female Sealed Terminal 12084200 Pack of 25

$13.00

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

Molex MX150 1.5 Female Unsealed Gold (Au) 20-18 AWG Terminal 50PCS

$20.10

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

$18.00
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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

Positive490- 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 (6,736)

u***d (31)- Feedback left by buyer.
Past 6 months
Verified purchase
Simple transaction, great communication, good price and quick delivery of OE quality auto wire
e***h (1397)- Feedback left by buyer.
Past month
Verified purchase
As described quick ship. Great EBay seller!
_***n (211)- 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 (1088)- Feedback left by buyer.
Past 6 months
Verified purchase
Good price, description, and got it fast.
f***9 (82)- Feedback left by buyer.
Past year
Verified purchase
Great communication and great seller. Fast shipping and item received as described. Thanks!
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