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Motorad MRD506 Spec-R Racing Radiator Cap High-Pressure Performance

(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

MRD506
6 reviews
Sale Price

$6.41

4 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Motorad MRD506 Spec-R Racing Radiator Cap is a high-performance pressure cap engineered for motorsport and performance street applications where superior cooling system integrity is critical. Motorad's Spec-R line is purpose-built to handle elevated system pressures, helping to raise the coolant boiling point and maintain optimal thermal efficiency under demanding conditions.

Key Features:

  • High-pressure rating designed for performance and racing cooling systems
  • Precision-engineered seals to prevent coolant loss and maintain consistent system pressure
  • Durable construction to withstand extreme underhood temperatures
  • Direct-fit replacement for compatible radiator filler necks
  • Part of Motorad's Spec-R performance cap series

Motorad is a globally recognized leader in thermostat and cooling system components, supplying both OEM and aftermarket customers. The MRD506 Spec-R radiator cap is an ideal upgrade for enthusiasts and racers seeking reliable, high-pressure cooling system protection beyond standard OEM specifications.

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

Good

best price, quick response.

I needed an expensive part for my outboard motor's steering system, several of the internet sellers should out of stock/back ordered. Boatplicity showed the item in stock. I went on chat and was told the item was available. I paid the extra $9.99 for 2 day delivery. I ordered the $2000.00 item Wed. May 15 2024 at 1:00 pm. Fed Ex rang my door bell the next day at 11:30 am. I received that item less than 24 hours from the time I placed my order. That is as good as it gets !

Very easy and good to shop with

Quick and easy. Conversation with rep was easy and quick as well.

VERY EASY TRANSACTION

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