Walker 570-5042 Exhaust Gas Recirculation (EGR) Valve

Walker 570-5042 EGR Valve Overview

Walker 570-5042 is an OE replacement Exhaust Gas Recirculation (EGR) valve built to restore factory emissions control and drivability. It regulates exhaust gas flow back into the intake manifold to help lower combustion temperatures and reduce NOx output. Compatible With 1995 Buick LeSabre, Park Avenue, Regal, and Riviera; 1995 Chevrolet Lumina APV; 1995 Oldsmobile 88, 98, and Silhouette; and 1995 Pontiac Bonneville and Trans Sport.

Key Features

• OE-style EGR valve for emissions system service
• Engineered to match factory flow rate, actuation timing, and valve position control
• Available in electronically controlled and vacuum-operated designs, depending on application
• Built with heat- and corrosion-resistant materials for under-hood durability
• Exact OE fit with original mounting locations and connector type
• Terminal type: spade; connector shape: oblong; connector gender: female; terminal gender: male
• Mounting hardware included; 1 connector, 5 terminals, and 2 mounting holes

Detailed Description

Walker 570-5042 is designed as a direct replacement EGR valve for 1995 Buick LeSabre, Park Avenue, Regal, and Riviera; 1995 Chevrolet Lumina APV; 1995 Oldsmobile 88, 98, and Silhouette; and 1995 Pontiac Bonneville and Trans Sport. The valve meters exhaust gas into the intake stream to reduce peak combustion temperatures, which helps control nitrogen oxide emissions while maintaining proper engine operation. Walker builds this EGR valve to OE specifications for flow, electrical connectivity, and position control so it matches the original emissions strategy on the vehicle. This part cross-references Delphi EG10023 and Standard Ignition EGV514 for the same application. Walker 570-5042 is a practical choice for emissions-related service on these GM platforms when the original valve is sticking, leaking, or no longer responding correctly.

Common Issues This Part Can Address

• Check engine light related to EGR system faults
• Rough idle or unstable idle speed
• Engine hesitation during acceleration
• Elevated NOx emissions during inspection
• Poor drivability caused by incorrect exhaust gas flow

Installation Notes and Tips

Verify connector style, terminal count, and mounting pattern before installation. Clean the mounting surface and inspect the EGR passages for carbon buildup, since restricted passages can affect valve performance even after replacement. Confirm the vehicle’s original EGR control type and compare the old part to Walker 570-5042 before final installation. After installation, clear diagnostic trouble codes and road test the vehicle to confirm idle quality and throttle response.

Quality Assurance

Walker manufactures this EGR valve to meet or exceed OE specifications for emissions control, electrical connection, and valve operation. The design uses materials selected for heat and corrosion resistance to handle continuous exhaust exposure in normal engine bay conditions.