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Motorad MRD503 Spec-R Racing Radiator Cap

(BMW M3 1988-91, M5 1988, M6 1987-88, 524td 1985-86; Mercedes-Benz E320 1994-95, SL500 1994-96, C230 1997-2000, 450SL 1980, S500 1994-95 + 53 more models)

Manufacturer

Picture for manufacturer Motorad

Part Number

MRD503
6 reviews
Sale Price

$6.09

3 left at this price

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Usually delivered within 2 days

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Product Details

The Motorad MRD503 Spec-R Racing Radiator Cap is a high-performance upgrade designed to increase cooling system efficiency and reliability. This premium racing cap features a higher pressure rating than standard OEM caps, allowing the cooling system to operate at elevated temperatures before boiling over, which is critical for high-performance and racing applications.

Key Features:

  • Higher pressure rating for improved cooling system performance
  • Precision-engineered valve mechanism for consistent pressure control
  • Durable construction designed for racing and high-stress conditions
  • Direct replacement for factory radiator caps
  • Universal fitment with standard radiator neck sizes

The Spec-R Racing Radiator Cap helps prevent coolant loss and maintains optimal operating temperatures during aggressive driving, track days, or towing. By raising the boiling point of the coolant through increased pressure, this cap provides an extra margin of safety for demanding performance applications.

Products specifications

Fits

BMW M3 1988-91, M5 1988, M6 1987-88, 524td 1985-86; Mercedes-Benz E320 1994-95, SL500 1994-96, C230 1997-2000, 450SL 1980, S500 1994-95, E500 1994, SLK230 1998-2004, 560SL 1986-89, 380SL 1981-85, C280 1994-96, E300 1995 + 47 more models

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