Prepare the complete procedure
The kit retains the lower airboxes and their mounting grommets while replacing the upper intake arrangement. Two turbo-inlet connections must be protected from debris when opened. Keep the illustrated revision and required BMW fastener information available.
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Critical assembly checks
The front and rear couplers have different positions. Test-fit the plenum to establish alignment before tightening the inlet connections. Make sure both lower boxes sit in their mounts and the filters clear the lids.
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Final inspection
Reconnect the disturbed electrical connector, complete the documented brace-seating sequence and secure every clamp. Remove all temporary inlet protection and tools. Do not force the plenum against a conflicting brace or substitute an improvised hose.
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Sources / references 5
- Dinan INS760-0063 — G8x M intake, revision C ↗Reviewed Sep 27, 2026
- Dinan D760-0063-B — current application and exclusions ↗Reviewed Sep 27, 2026
- BMW PressClub — 2021 M3 and M4 ↗Reviewed Sep 27, 2026
- BMW PressClub — M4 Competition Convertible ↗Reviewed Sep 27, 2026
- BMW PressClub — 2023 M2 ↗Reviewed Sep 27, 2026
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