Walbro 125-135b Fuel Filter on 2040-parts.com

Autoweek in review: NASCAR fans hire lawyer, McLaren prices the P1

March is here, and things are warming up in the automotive world. On Monday Alfa Romeo teased the 4C interior ahead of the Geneva motor show, and we wound down after a sobering weekend of racing. We reviewed the 2014 Jeep Grand Cherokee on Tuesday and heard that the McLaren P1 supercar will sticker for $1.15 million when deliveries begin in early 2014.

One Lap of the Web: A homebuilt KITT, and Tacoma vs. your girlfriend

Hagerty is profiling a homemade version of KITT from the "Knight Rider" TV series. Builder Chris Palmer needed five Pontiac Trans-Ams, tons of visits to eBay and hundreds of hours of work with help from friends. Check out the result here.

Jaguar XF Diesel S (2008): first details

By Tim Pollard First Official Pictures 29 December 2008 00:31 Jaguar today announces a family of new higher-powered diesel engines, led by a rapid 271bhp version of the derv XF that's aimed squarely at the BMW 535d. It's the fastest diesel Jag ever – and will also slot into the XK coupe and cabrio.The diesel work-out is good news for the XF – today's 2.7-litre V6 turbodiesel doesn't have the clout to mix it with the best German engines. We've already complained about the slothful performance of our long-term test XF and the new, bigger 3.0-litre oil-burner should answer such criticisms.