Parts for your 2006 Toyota Bb-Engine mount

2006 Toyota bB engine mount — what it does and when to replace it

Engine mounts are absolutely fitted to the 2006 Toyota bB. Toyota’s Electronic Parts Catalog (EPC) and the Toyota Technical Information System (TIS) service manuals for the bB (NCP3# first-gen and QNC2# second-gen, 2006 model year) list and illustrate multiple “engine mounting insulators” and brackets. Equivalent documentation for the related Scion xB/ist platform shows the same arrangement: a right-hand (timing side) engine mount, a left-hand transmission mount, and front/rear torque mounts to control fore–aft movement. So engine mounts are relevant and very much part of the car’s design.

On a 2006 bB, the mounts do three key jobs: support the weight of the engine and transaxle, isolate vibration so the cabin stays calm, and keep the drivetrain correctly aligned under braking and acceleration. The torque mounts limit rocking when taking off from the lights, protecting CV joints, exhaust flex sections, and even the shifter feel in auto models.

Mounts don’t need regular replacement by time alone, but they’re a smart inspection item at service intervals, especially as kilometres rack up. Hydraulic-style mounts can seep fluid and collapse, rubber can crack or separate from the metal. Tell-tale signs include:

• Noticeable vibration at idle or when engaging Drive
• Clunks on take-off or when shifting from Reverse to Drive
• Excessive engine movement when blipping the throttle

Good practice on a 2006 Toyota bB is to inspect mounts around the 100,000–150,000 km mark or whenever those symptoms show up. If one mount has failed, it’s worth checking the others, as extra load can accelerate wear. When replacing, support the engine properly with a support bar or jack and timber at the sump rail—never jack directly under the sump. Torque all fasteners to spec with the engine at normal ride height to avoid pre-loading the rubber. After fitment, a quick road test to verify idle quality and driveline feel is wise. Quality matters here: OE or reputable aftermarket mounts will keep noise, vibration and harshness in check and last the distance on Aussie and Kiwi roads.

For technicians and DIYers alike, the Toyota TIS procedures and EPC diagrams are the go-to technical sources for mount locations, torque specs, and correct lift/support points on the 2006 bB.

Popular questions about 2006 Toyota bB engine mounts

How many engine mounts does a 2006 Toyota bB have?
Most 2006 bB variants use four mounts: right-hand engine mount, left-hand transmission mount, plus front and rear torque mounts. Exact hardware can vary slightly by engine and transmission, but the Toyota EPC/TIS diagrams show this four-point arrangement on mainstream models.

What are the common symptoms of a failing engine mount on a bB?
Expect more vibration at idle, a thunk on take-off or when shifting between Reverse and Drive, and visible engine rock when revved in neutral. In hydraulic mounts, you may also spot oily residue from leaked fluid.

Do engine mounts need periodic replacement as maintenance?
There’s no fixed time-based interval. They’re “inspect and replace as needed” items. On higher-kilometre bBs, it’s sensible to check them during major services, especially if there are NVH complaints or driveline clunks.