Prevent debris entering the engine without restricting flow.
A K&N RC 2500 filter upstream of the throttle body.
Flow bench data showed three K&N filters had very similar flow properties, so the lightest was chosen: 0.2 lb against 0.4 lb.
Purchased K&N unit.
None recorded. This part has no entry in Knowledge_Transfer/Issue Logging/Fault Vault.xlsx, in either Issue Log.xlsx, in CR22/Issue Tracking/Shakedown 7-15-23.xlsx, or in any design review issue list found in CrimsonStorage or Box.
0.2 lb. From the cost report drawings and CAD: Weighed mass: 107.0 g (0.236 lb). CAD mass, CR26I master assembly: 0.191 lb (0.086 kg). CG at X 60.04 in, Y -0.33 in, Z 40.32 in in vehicle coordinates. CAD mass, CR25 master assembly: 0.191 lb (0.086 kg). CG at X 60.04 in, Y -0.33 in, Z 40.32 in in vehicle coordinates. CAD mass, CR22 master assembly: 0.191 lb (0.086 kg). CG at X 60.80 in, Y -0.45 in, Z 40.47 in in vehicle coordinates. Dimensions called out on the cost report drawings. These are the figures printed on the drawing, not a labelled specification; open the drawing itself for what each one refers to. Air_Filter (as drawn): 5.79, 1.40, 7.44, 5.18, 6.17 Air Filter (as drawn): 5.18, 7.44, 6.17, 5.79 Quantity on the drawing: 1. Source: Subteam weight books: CR27i/.Powertrain/Design/1 ~ Full System Analysis/Mass Analysis/CR27i Powertrain Weight Tracker.xlsx | SolidWorks mass model exports: CR22 (5 May 2024), CR25 (4 Jul 2025), CR26I (30 Jul 2025), CR26E (22 Mar 2026) | Cost report drawings: CR22/Powertrain/Design/X - Cost Report Drawings/Manifolds/Intake/Air_Filter.pdf; CR25/Powertrain/Design/Y - Cost Report Drawings/Manifolds/Intake/Air Filter.pdf; CR26i/Powertrain - IC/Design/Y - Cost Report Drawings/Manifolds/Intake/Air Filter.pdf; CR27i/.Powertrain/Design/Y - Cost Report Drawings/Manifolds/Intake/Archive/Air Filter.pdf Quantity per car, as costed: 1
Nothing in CrimsonStorage covers these yet.