Clear access and assemble
Remove the engine cover’s three bolts and two acorn nuts. Release the four spring clamps and remove the two manifold-to-valve-cover hoses. Bolt both cans to the bracket. Put angled fittings in the middle positions; use no PTFE tape. Tighten angled fittings with a hex key and snug straight fittings with a wrench.
Sources 1
Mount the 370Z bracket
Remove two mounting bolts, including the expansion-tank bolt. Slide the bracket under the tank and radiator-cover section; secure with original hardware and the supplied additional bolt. Use the PDF’s 370Z bracket image, not its different G37 arrangement.
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Route and secure
Passenger side: shortest hose connects valve cover to IN; medium hose connects manifold to OUT. Driver side: long hose connects valve cover to IN; square-shaped hose connects manifold to OUT. Use 12–20 mm clamps at engine ports and 16–25 mm at cans. Tighten all connections and refit the cover.
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Establish the service baseline
Mishimoto specifies checking contents every 1,000 miles initially; accumulation depends on driving and ambient conditions. Never let collected fluid reach above the internal baffle. The stated capacity is 3 ounces per can. Record both cans separately instead of assuming they fill equally.
Sources 2
Document the result
Record installation mileage and take an unobstructed photograph of each port connection. At the first inspection, write down the distance traveled and what each can contained. That record gives the next inspection a meaningful comparison. If the installed hardware differs from the illustrated kit, resolve the difference with Mishimoto before adapting the bracket or substituting hose. This guide follows the model-specific arrangement; a universal-can layout is a different installation.
Products in this guide
Sources / references 2
- Mishimoto twin catch-can installation instructions ↗Reviewed Oct 9, 2026
- Mishimoto MMBCC-370Z-09PBE product specification ↗Reviewed Oct 9, 2026
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