Photo - Primary
Photo - Primary
Photo - Primary
Photo - Unmounted
Installation Instructions
User 4
Features and Benefits
User 3
Photo - Unmounted
Features and Benefits
Photo - Unmounted
User 3
Features and Benefits

BBK

BBK 18-20 Ford Mustang GT O2 Sensor Wire Harness Extensions 16in (Pair)

SKU: BBK1121
Barcode: 197975011213

$74.99

In stock

This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!

Not sure it fits? Ask our fitment team — we check before it ships.

Authorized dealer — genuine parts only

Ships from our US warehouse

Fitment guaranteed or we take it back
BBK 18-20 Ford Mustang GT O2 Sensor Wire Harness Extensions 16in (Pair)

$74.99

$74.99

Tech Specs

Brand
BBK
SKU
BBK1121
Manufacturer part number
1121
Category
Gauges & Pods › Gauge Components
Shipping weight
0.27 lb
Availability
Stocked
EPA
N/A

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

When you install a set of BBK Performance long tube exhaust headers on your muscle car or truck, the O2 sensor locations are relocated on the BBK header and mid pipe. The factory O2 sensor wire connectors will not be long enough to connect to the sensors any longer.. These extension harnesses extend the length needed and allow them to now connect easily - All our extension harnesses feature OEM Factory connectors to allow simple plug in installation to the factory wire harness so that the relocation is super simple and does not require any splicing of the factory harness at all. (Sold in Pairs)

Related Tech Articles

How to Choose a Big Brake Kit Without Overbuying

How to Choose a Big Brake Kit Without Overbuying

Aug 25, 2026 11 min read

A big brake kit doesn't shorten your stopping distance — tires do. What it actually buys is heat capacity and pedal consistency. How to choose rotor diameter, piston area and pad compound, and when fluid and pads are the smarter spend.

Read the breakdown
Where Exhaust Power Actually Comes From

Where Exhaust Power Actually Comes From

Aug 25, 2026 11 min read

Almost every cat-back horsepower claim online is unsourced. Here's what an independent dyno test actually measured, why scavenging lives in the headers and not the cat-back, and where the power really is on a turbo car.

Read the breakdown
Coilovers vs Lowering Springs: How to Actually Decide

Coilovers vs Lowering Springs: How to Actually Decide

Aug 25, 2026 9 min read

Both lower the car — but the decision is really about the damper. Why stock dampers and aftermarket spring rates fight each other, when springs are genuinely the right call, and what each path costs you beyond the parts.

Read the breakdown