Master Cylinder - New
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Master Cylinder - New Master Cylinder - New
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Carquest Wearever Master Cylinder - New

Part No. MCA390044 Warranty Details  

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All master cylinders meet or exceed O.E. form, fit and function.
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Installation Hardware Included:No
Reservoir Material:Plastic
Reservoir Included:Yes
Master Cylinder Color/Finish:Gray
Secondary Port Size:M10 x 1.0
Primary Port Size:M12 x 1.0
Package Contents:Master Cylinder
Reservoir Type:Single
Pedal Rod Included:No
Bore Diameter (N-1):1.190"
Bore Diameter (N):0.937"
Mounting Hole Quantity:2
Master Cylinder Material:Aluminum
Product Condition:New
Port Count:2


by PowerReviews
Carquest WeareverMaster Cylinder - New

(based on 1 review)

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Reviewed by 1 customer

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Cracked Reservior


from West Reading, PA

About Me Auto Enthusiast

Verified Buyer


  • Inexpensive


  • Poor Quality Plastic

Best Uses

  • Paper weight

Comments about Carquest Wearever Master Cylinder - New:

The plastic brake fluid reservoir was split along the fused seam and I didn't find the problem until the old one was torn out. I had fluid running down my hand as I tried to bench bleed the new one.
I returned it... but the replacement had the same split seam. Fortunately I checked that one before leaving the store.
I ended up reusing the old reservoir and installing a rebuilt MC, the only other unit the store had available.
I'd guess the MC itself was OK and probably could have reused the reservoir from the old one with this unit but I wasn't about to find out, and I paid for a complete functioning MC.
The gentleman at AA was very helpful and apologetic and he provided a discount for my troubles.

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