Two aluminum throttle bodies with EGR spacers side by side for b…

Two cast-aluminum throttle bodies with matching EGR spacer plates sitting side by side on a floral bedsheet for a bore-size comparison. The left unit has a smaller bore and a curved coolant/idle tube, while the right unit's throttle blade fills a noticeably larger opening.

AI caption February 2004 · Photo 13 of 5000