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2025-2026 Cadillac CT4 and CT5 Brake Master Cylinder Reservoir

This is a Genuine OEM Cadillac brake master cylinder reservoir for 2025-2026 Cadillac CT4 and CT5 models. It is built to GM specifications for the North America and Canada markets.

Fitment Alert – Confirm These Details Before You Order

Check each line below against your vehicle before ordering.

Cadillac CT4	2025-2026; Luxury, Premium Luxury, Sport, V, V Blackwing trims; 2.0L Turbo L4, 2.7L Turbo L4, 3.6L Turbo V6 engines
Cadillac CT5	2025-2026; Luxury, Premium Luxury, Sport, V, V Blackwing trims; 2.0L Turbo L4, 3.0L Turbo V6 engines; 6.2L Supercharged V8 on 2026 V Blackwing
Part	Brake Master Cylinder Reservoir
Market	North America and Canada

Quick Part Facts

Condition: New
Part Type: Brake Master Cylinder Reservoir
Brand: Genuine GM OEM
Years: 2025-2026
Models: Cadillac CT4, Cadillac CT5
Trims: Luxury, Premium Luxury, Sport, V, V Blackwing
Engines: 2.0L Turbo L4, 2.7L Turbo L4, 3.0L Turbo V6, 3.6L Turbo V6, 6.2L Supercharged V8
Market: North America and Canada

Fitment Chart

Year Range	Make	Model	Trim/Engine	Notes/Options
2025-2026	Cadillac	CT4	Luxury 2.0L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT4	Premium Luxury 2.0L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT4	Premium Luxury 2.7L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT4	Sport 2.0L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT4	V 2.7L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT4	V Blackwing 3.6L Turbo V6	Single use; North America, Canada
2025-2026	Cadillac	CT5	Premium Luxury 2.0L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT5	Premium Luxury 3.0L Turbo V6	Single use; North America, Canada
2025-2026	Cadillac	CT5	Sport 2.0L Turbo L4	Single use; North America, Canada
2025-2026	Cadillac	CT5	V 3.0L Turbo V6	Single use; North America, Canada
2026	Cadillac	CT5	V Blackwing 6.2L Supercharged V8	Single use; North America, Canada