Dorman 54246 Engine Coolant Reservoir Cap

Dorman 54246 Engine Coolant Reservoir Cap

Replace a cracked or missing coolant reservoir cap with a direct-fit Dorman 54246 engine coolant reservoir cap. This black plastic flip-top cap is built as a snap-on replacement for select Nissan applications, including Sentra, Pulsar, and Pulsar NX models.

Key Features

• Direct replacement engine coolant reservoir cap for select Nissan vehicles
• Black plastic construction for a factory-style appearance
• 42 mm diameter with snap-on attachment
• Flip-top design for straightforward reservoir access
• Non-vented and non-pressurized design
• Compact 1.5 in. length and 1.5 in. width

Product Details

Dorman 54246 is engineered to replace the original coolant reservoir cap when the factory part is cracked, lost, or no longer sealing properly. Its direct-replacement design supports a clean OE-style fit on compatible Nissan cooling system reservoirs, including 1982-1986 Nissan Sentra, 1983-1986 Nissan Pulsar NX, and 1983 Nissan Pulsar. The 42 mm size, snap-on attachment, and flip-top layout make it a practical match for vehicles that use this style of reservoir cap. Part number 54246 is also referenced under interchange number 2172004A00.

Common Issues This Part Can Address

• Broken or cracked coolant reservoir cap
• Lost reservoir cap after service or inspection
• Improper sealing at the coolant reservoir opening
• Worn cap that no longer matches the original fitment
• Need for a direct replacement on Nissan Sentra, Pulsar NX, or Pulsar cooling systems

Installation Notes and Tips

Confirm the reservoir opening diameter and cap style before installation. This Dorman 54246 cap uses a snap-on, flip-top design and is not vented or pressurized. Verify the vehicle application against the listed fitment for 1982-1986 Nissan Sentra, 1983-1986 Nissan Pulsar NX, and 1983 Nissan Pulsar before replacing the original cap.

Quality Assurance

Dorman manufactures this coolant reservoir cap as a direct replacement part for the specified Nissan applications. The part is built to match the original style and dimensions for a proper service replacement.