Keystone MA1250119 Engine Splash Shield Left Hand OEM Replacement

The Keystone MA1250119 is an OEM-style replacement left-hand engine splash shield designed for the Mazda 3 (2019–2025, Japan/Mexico Built — Sedan and Hatchback) and the Mazda CX-30 (2020–2025). Also cross-referenced as BDTS5634ZA, this underhood shield delivers a factory-correct fit and finish to restore underbody protection after collision damage or wear.

The engine splash shield — also referred to as an engine under cover, underbody splash guard, or lower engine cover — protects critical engine bay components from road debris, moisture, and contaminants. Replacing a damaged or missing shield helps preserve long-term engine health and maintains proper aerodynamic airflow beneath the vehicle.

Key Features:

• Direct OEM-style replacement for the left-hand (driver side) engine splash shield
• Cross-reference OEM part number: BDTS5634ZA
• Designed for Japan-built and Mexico-built Mazda 3 vehicles (Sedan and Hatchback body styles)
• Compatible with Mazda 3 model years 2019–2025 and Mazda CX-30 model years 2020–2025
• Engineered to meet OEM fit, form, and function standards
• Helps protect engine components from road debris, water intrusion, and undercarriage contaminants
• Manufactured by Keystone Automotive Industries, a trusted name in collision replacement parts

This splash shield is an ideal solution for collision repair shops and DIY restorers looking for a reliable, cost-effective alternative to dealer-sourced parts, with the confidence of OEM-equivalent quality.