ACDelco 18M91 Professional Brake Master Cylinder Assembly - 28.575 mm Bore (18030333)
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Description
ACDelco Professional Brake Master Cylinders use both aluminum and iron castings, making them a high quality replacement for many vehicles on the road today. These master cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. ACDelco Professional Brake Master Cylinders are ready to bench bleed and install right out of the box - no assembly required. These premium aftermarket replacement brake master cylinders are manufactured to meet your expectations for fit, form, and function.
- Bleeder Hoses Included: Yes
- Brake Booster Included: No
- Classification: Gold
- Master Cylinder Bore Diameter: 28.575 mm
- Master Cylinder Cap Included: Yes
- Master Cylinder Material: Iron
- Mounting Bracket Included: No
- Mounting Hole Diameter: 0.423 in
- Mounting Hole Quantity: 2
- Port Quantity: 2
- Primary Outlet Thread Diameter: 0.5 in
- Pushrod Included: No
- Reservoir Included: Yes
- Secondary Outlet Thread Diameter: 0.563 in
For more technical details and/or manufacturers product guides, email us.
Most orders ship from our warehouse the next business day unless otherwise noted.
*Add this item to the cart to estimate shipping costs and any applicable taxes.
Features
- Mounting Hole Quantity:2
- Classification:Gold
- Brake Booster Included:No
- Primary Outlet Thread Diameter:0.5 in
- Master Cylinder Bore Diameter:28.575 mm
- Mounting Hole Diameter:0.423 in
- Bleeder Hoses Included:Yes
- Secondary Outlet Thread Diameter:0.563 in
- Pushrod Included:No
- Master Cylinder Cap Included:Yes
- Mounting Bracket Included:No
- Reservoir Included:Yes
- Master Cylinder Material:Iron
- Port Quantity:2
Reviews
Details
Product Details:
- Manufacturer:ACDelco
- Part Number:18M91
- UPC:036666695786
- Sold in QTY:1
- Condition:New
- Product Category Taxonomy:Vehicles & Parts > Vehicle Parts & Accessories > Motor Vehicle Parts > Motor Vehicle Braking
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$56.77
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What customers are saying
- ★★★★★Fast shipping and exactly what I ordered. Will buy again!.— John D.
- ★★★★★Easy to find the part I needed and the price beat the dealer.— Sarah M.
- ★★★★☆Great customer service when I had a question about fitment.— Mike R.
- ★★★★★Ordered Friday, arrived Monday. Packaging was perfect.— Carlos V.
- ★★★★★Honest pricing and the part fit like OEM.— Linda H.
- ★★★★★Thank you so much!.— Jim, CA
- ★★★★★Received my merchandise today. All is good.— Dave, IL
- ★★★★☆I was happy with the quality in the brass strips, quick delivery, and your service— Marvin, FL
- ★★★★★Service and price and ease of ordering was great! -— Annette, NJ
- ★★★★★I just wanted to say how impressed I am with your service!— Jason, IA
- ★★★★★The items purchased are exactly what I ordered. No surprises and that is always good.— Chuck, WA
- ★★★★★I am really thankful that my order was handled so fast.— Matt, MN
- ★★★★☆Thank you for double checking the fit!— Robert, NJ
- ★★★★★You are the best this is exactly what I need!— Jeffrey, MA
- ★★★★★I appreciate your rapid service!— Richard, AR
- ★★★★★All parts fit well together. Just the right size for my purposes. Easy to maneuver. Thank you for making this item available to me.— Fred
Questions shoppers ask
See all FAQsHow soon does it ship?
Most orders ship from our warehouse the next business day unless otherwise noted. Add the item to your cart to see shipping cost and any tax.
Can I return it?
Most items can be returned within 30 days of delivery if they are unused and in their original, undamaged packaging. Email us for return instructions first, and make sure the item reaches our warehouse within those 30 days. A 15% restocking fee applies unless the item is defective or the mistake was ours. Special orders and items marked No Return can't be returned. Full return policy.
Do you offer quantity discounts?
For larger quantities, yes. Tell us how many you need and we will come back with a quantity price: see Bulk Order, or ask us.
Your prices are so good, is it new?
Yes. This item is new and in its original ACDelco packaging unless the description above says otherwise.
OEM or aftermarket?
An OEM part is made by, or for, the company that built the vehicle and carries their branding. An aftermarket part is made by another manufacturer to fit the same application, usually for less. Quality runs from below OEM to above it depending on the brand, so the name on the box matters more than the label.