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Prothane 7-503-BL GM V8 Polyurethane Motor Mount Kit 1955-1957

(1955-1957 Chevrolet Bel Air)

Manufacturer

Picture for manufacturer Prothane

Part Number

7-503-BL
13 reviews
Sale Price

$17.18

Estimated ship date Sunday, January 10

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Prothane 7-503-BL is an application-specific polyurethane motor mount kit designed for GM 8-cylinder (V8) engines in 1955–1957 vehicles. Unlike universal mounts, these are engineered to the exact geometry of the OEM mounting points, ensuring a precise, reliable fit without modification.

Prothane's polyurethane construction significantly outperforms factory rubber mounts by reducing engine movement under acceleration and hard cornering. This tighter control puts more power to the wheels and helps prevent drivetrain misalignment caused by excessive motor torque roll.

Key Features:

  • Application-specific engineering — designed specifically for GM V8 stock applications, not a universal fit
  • Polyurethane construction — more durable and resilient than OEM rubber mounts
  • Reduced engine travel — limits torque roll to improve power transfer and drivetrain protection
  • Poly-locked "run-safe" design — retains the engine in position even in the event of mount failure, so you can safely drive home
  • Black (BL) finish — clean appearance under the hood
  • Direct OEM replacement — no drilling or modifications required

Whether you're building a street cruiser or a performance machine, the Prothane 7-503-BL motor mounts deliver the durability and precision needed to keep your classic GM V8 properly seated and performing at its best.

Products specifications

Fits

1955-1957 Chevrolet Bel Air

Prop 65

No

very good experience

Great website and customer service.

I wish I could find the 30 series tire for the front of my mustang .. but I don't see that you sell them ?

Good

good

Good

So glad you have the part I needed! Easy to use your webpage and so glad you accept Amazon pay method! If the wiper arrives soon and as expected you will have won a new customer! Also the coupon was very convincing! Good job!

Solas prop, brand new. Perfect thanks.

I was very pleased with my transaction with Autoplicity. My order was shipped the next day and received the following day. The pricing was also the best I could find. I would definitely buy from them again and recommend them to others.

Shipment was quicker than I thought and the product was just as described. It was cheaper than else where. Thank you Autoplicity

thanks for the quick service

Lowest prices on name brand items, quick shipping, and provide information on the status of your order.

I ordered this product and Wednesday in the morning and it was on my door step Thursday morning with regular shipping. The ordering process was super easy and the price was $35 cheaper than any other online retailer. The Rack is awesome, easy to assemble took me about 20 minutes by myself, put on my jeep hooked up the bikes and off I went, fantastic design, I highly recommend the Rola NV2 bike rack and highly recommend Autoplicity

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