ACDELCO 55508978
ACDELCO part number 55508978 is a coolant air bleed hose / pipe in the Cooling System system. This catalog matches it to 13 year-and-engine configurations from 2020 to 2026.
Verified fitment includes 2026 Cadillac CT4 2.0L L4 Turbocharged ; 2026 Cadillac CT5 2.0L L4 Turbocharged ; 2025 Cadillac CT4 2.0L L4 Turbocharged ; 2025 Cadillac CT5 2.0L L4 Turbocharged ; 2024 Cadillac CT4 2.0L L4 Turbocharged , plus 8 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is ACDELCO 55508978?
ACDELCO part number 55508978 is a coolant air bleed hose / pipe with published application data for 13 vehicle configurations from 2020 to 2026. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does ACDELCO 55508978 fit?
This catalog matches 55508978 to 13 year-and-engine configurations from 2020 to 2026. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is ACDELCO 55508978 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. ACDELCO 55508978 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
AutoFactsDB is reader-supported. As an Amazon Associate, we earn from qualifying purchases made through links on this page — at no extra cost to you.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.