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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

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

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

$9.98

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

$26.49

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

$44.95

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

$12.95

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

$15.75

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

$9.00

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

$15.00

OBD-II Diagnostic Test Connector Pigtail GM CAN OBD2 OBDII

$11.99

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

$14.25

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

$14.00

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

$13.50

EFI Connection Tesa Tape 51036 Single Roll

$11.99

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

$35.00

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

$15.00

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

$9.50

700R4 Transmission Connector Pigtail Bundle VSS 1980s GM

$15.99

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

$13.75

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

$13.75

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

$13.00

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

$13.00

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

$395.00

LS Gen III Engine Wiring Systems: 1997-2007

$36.95

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

$28.00

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

$30.00

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

$15.25

E85 Flex Fuel Composition Sensor Connector Kit GM

$10.70

EFI Connection Connector Kit for GM 700R4 Transmission

$12.50

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

$65.95

Reverse Lockout Solenoid Pigtail T56 GM 5.7L LS1 (00-02 Camaro Firebird)

$5.50

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

$15.00

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

$18.00

58mm Throttle Body Gasket Set

$14.99

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

$20.10

Fuel Injector 8 EV6 Pigtail GM 6.0L LS2 (05-09)

$6.00

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

$14.50

Electric Radiator Cooling Fan Relay Pigtail GM 5.7L TPI L98 (88-92)

$16.00

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

$9.00

6L80E 6L90E T43 TCM Transmission Connector Pigtail

$61.99

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

$9.00

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

$12.60

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

$8.50

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

$35.00

TXL Automotive Wire 10 AWG RED Bulk 25 ft Primary Copper

$25.80

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

$10.00Save up to 20% when you buy more

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

$16.79
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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

Positive486- 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 (6,731)

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 (1395)- Feedback left by buyer.
Past month
Verified purchase
As described quick ship. Great EBay seller!
_***n (209)- 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!
See all feedback