The stock 3100 Throttle body is 52mm. Stock 3400 s 56mm. While this seems like a small difference, it will equal a very noticable difference once installed on a 3100 engine. Sold as a bare throttle body with plate, so you will need to swap your stock sensors to the new throttle body, as well as your stock linkage/shaft. No cutting required though torx bits and a hammer will be necessary to remove the sensors and stock plate. The hammer is used to tap the shaft out once the plate and TPS are removed.
The stock 3100 Throttle body is 52mm. Stock 3400 s 56mm. While this seems like a small difference, it will equal a very noticable difference once installed on a 3100 engine. Sold as a bare throttle body with plate, so you will need to swap your stock sensors to the new throttle body, as well as your stock linkage/shaft. No cutting required though torx bits and a hammer will be necessary to remove the sensors and stock plate. The hammer is used to tap the shaft out once the plate and TPS are removed.