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2018-2025 Porsche Cayenne Mirror Base Trim Covers | Left Right Pair 9Y0857577 578
2018-2025 Porsche Cayenne Mirror Base Trim Covers | Left Right Pair 9Y0857577 578
OPTIFLOW AUTO · FITMENT-FOCUSED PARTS
Replacement mirror-base trim covers for matching Porsche Cayenne applications. Choose left or right and compare profile, clips and surface finish.
OE-style replacement Select left, right or pair
At a glance
| Vehicle / configuration | Selected 2018-2025 Porsche Cayenne mirror-base applications using the matching trim profile and clip pattern. |
|---|---|
| Order unit | Select left, right or pair |
| Package contents | Contents follow the selected left trim cover, right trim cover or matched pair option. |
| Connector / configuration | No electrical connector; exterior trim cover only. |
| Package dimensions | Approx. 17 × 11 × 8.5 cm |
| Finish | OE-Style Mirror Base Trim — verify original texture and color |
Fitment and configuration
Selected 2018-2025 Porsche Cayenne mirror-base applications using the matching trim profile and clip pattern.
No electrical connector; exterior trim cover only.
Check before ordering: Trim cover only. Compare outline, clips, surface texture and mirror-base geometry.
Select the correct option
| Option | SKU |
|---|---|
| Driver Side / Left | AST-PO-CAY18-MFC-L |
| Passenger Side / Right | AST-PO-CAY18-MFC-R |
| Pair / Left & Right | AST-PO-CAY18-MFC-PR |
Contents follow the selected left trim cover, right trim cover or matched pair option.
OE reference comparison
Left: 9Y0857577
Right: 9Y0857578
Vehicle names and OE references identify compatibility only. This is an aftermarket replacement, not a vehicle-brand genuine part.
Installation and supply
Compare side, outline, clip positions, texture and mirror-base geometry before installation.
Availability is specific to the selected SKU and warehouse. A left-and-right pair is a separate order unit; it is not automatically assembled from single-side stock. U.S. replenishment, factory bulk supply, freight and lead time are reviewed separately.
Trade and quantity purchasing
For repair-shop, reseller or recurring purchases, use the product’s trade-quote button to send the selected SKU and quantity. We confirm fitment, availability and written pricing before the order. Explore our Wholesale & Trade Program.
VEHICLE FITMENT
OE / OEM REFERENCES
BEFORE ORDERING
INSTALLATION POSITION
PACKAGE CONTENTS
LENS FINISH
CONNECTOR & WIRING
INSTALLATION NOTES
PACKAGE DIMENSIONS
NET PRODUCT WEIGHT
WARRANTY