Description: Edelbrock's #91171 is a replacement Bosch LSU 4.2 wide-band oxygen sensor with a square connector, compatible with Edelbrock #91170 2-channel and #3532 wide-band air/fuel ratio monitors.
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A lot of Edelbrock's success can be traced to its early involvement in midget car racing, where many new Edelbrock parts were tested.
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Edelbrock has been making engines faster since flatheads were still new technology!
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Edelbrock was one of the first companies to use an engine dynamometer to test performance gains. The Clayton dyno was capable of recording up to 200-horsepower.
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Edelbrock's first parts catalog was printed just after WWII, in 1946.
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Edelbrock's first purpose-built manufacturing facility in 1949.
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Edelbrock's giant campus in Torrance, California houses its design, testing, and manufacturing departments.
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Founder of Edelbrock, Vic Edelbrock, Sr.
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The infamous Ford flathead Edelbrock Slingshot intake manifold. It was the first to bear the Edelbrock name.
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The So Cal Special streamliner used Edelbrock parts through the early 1950s.
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Vic Edelbrock, Sr., in his '32 Ford highboy roadster, crossing the timing lights at El Mirage.
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Vic with his six-carb Ram Log intake manifold.
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Vic, Sr., and his successor, Vic Edelbrock, Jr.
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Vic's '32 Ford went 112MPH way back in 1939! It may not sound fast by today's standards, but it paved the way for modern hot rodding.
If you live in California, please note this item may be subject to a Proposition 65 warning. Click here to learn more.
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