Kooks / Oxygen Sensor Extensions

Kooks GM LT1 / LS1 18-inch O2 Extension Harness | CAS-109010-18

Check vehicle fitment
£26.61 VAT included. Shipping calculated for your destination.

Available to Order

Not sure which one? Ask us to confirm fitment first →
Delivery, customs and taxes Know the landed cost before you order

Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.

Lead times and urgent orders Check timing before you commit

Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.

Fitment checked before you order

Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.

Technical specifications
Specification Details
SKU CAS-109010-18
Application GM Gen II LT1 / Gen III LS1 cars; Camaro / Firebird and 2004-2006 GTO
Included harnesses One 18-inch harness; flat 4-pin connector
Purchase purpose Replacement for damaged or lost extensions; Kooks header kits include required extensions where needed

Replace the O2 extension your exhaust needs

Get your sensor wiring connected again with the correct Kooks replacement extension for GM Gen II LT1 / Gen III LS1 cars; Camaro / Firebird and 2004-2006 GTO. This is a practical replacement when an existing oxygen-sensor extension has been damaged or lost, with the harness lengths and connector details listed below.

SKU: CAS-109010-18

The correct harness for the job

One 18-inch harness; flat 4-pin connector. Match the plug type, sensor position and extension length to the part you are replacing. Front and rear extensions do different jobs, so use the listed contents rather than choosing by vehicle name alone.

Replacement parts for your Kooks exhaust

Kooks header kits include the required oxygen-sensor extensions where needed. This separate listing lets you replace the extension you need when servicing your exhaust.

Vehicle fitment

Years Vehicle / trim Engine Applicable SKU Fitting conditions
1993-1997 Chevrolet Camaro Z28 5.7L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position
2004 Pontiac GTO Base 5.7L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position
2005-2006 Pontiac GTO Base 6.0L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position
1993-1997 Pontiac Firebird Formula 5.7L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position
1993-1997 Pontiac Firebird Trans Am 5.7L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position
1994 Pontiac Firebird Trans Am GT 5.7L V8 CAS-109010-18 Replacement for the matched existing extension; match connector and sensor position

Ordering and delivery

Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.

Technical specifications

Specification Details
SKU CAS-109010-18
Application GM Gen II LT1 / Gen III LS1 cars; Camaro / Firebird and 2004-2006 GTO
Included harnesses One 18-inch harness; flat 4-pin connector
Purchase purpose Replacement for damaged or lost extensions; Kooks header kits include required extensions where needed

Frequently asked questions

What is supplied?

One 18-inch harness; flat 4-pin connector.

Do I need this as an extra with a new header kit?

Kooks includes the required extensions in its header kits where needed. Use this listing for a damaged or lost extension.

Will this change how my O2 sensor works?

It extends the electrical connection. Match the existing sensor and harness connector; the extension is not a replacement oxygen sensor.

Delivery, customs and taxes

Know the landed cost before you order

Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.

Lead times and urgent orders

Check timing before you commit

Estimated lead time: 4–6 weeks. Delivery may be faster depending on stock levels. Contact us before ordering if timing matters.

Fitment first

Check fit before you order

Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.

Check vehicle fitment
Need help with this product?

Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.

Kooks GM LT1 / LS1 18-inch O2 Extension Harness | CAS-109010-18
Kooks GM LT1 / LS1 18-inch O2 Extension Harness | CAS-109010-18
Available to Order £26.61