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Chrysler 4721721AA Booster-Power Brake

2001-2007 Chrysler 4721721AA

Customer Questions & Expert Answers (4)
Mopar 4721721AA Booster-Power Brake
  • Part Description
    Booster Power Brake
  • Manufacturer
    Mopar
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chrysler
    Manufacturer Part Number4721721AA
    Part DescriptionBooster Power Brake
    Other NamesBooster Assembly, Brake Booster
    Item Dimensions19.4 x 11.7 x 12.1 inches
    Item Weight0.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerMopar
    SKU4721721AA
    WarrantyThis genuine Mopar part is guaranteed by Mopar's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    2001-2007 Chrysler Town & Country6 Cyl 3.3L, 6 Cyl 3.5L, 6 Cyl 3.8LBase, EL, EX, Limited AWD, Limited FWD, LX AWD, LX FWD, LXi AWD, LXi FWD, Touring AWD, Touring FWD
    2001-2003 Chrysler Voyager4 Cyl 2.4L, 6 Cyl 3.3LBase, EC, LX
  • Customer Questions & Expert Answers

    Q:
    This part will not fit my vehicle. Can you provide me with the part number for the bracket that will fit? TN. Posted by MoparPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 4721721AA fits your vehicle.
    Posted by MoparPartsGiant Specialist
    Q:
    How to remove and install Brake Booster on Dodge Caravan? Posted by Customer
    A:
    To perform an operating check on the brake system, start by depressing the pedal and starting the engine; a slight pedal depression is normal. Depress the brake pedal multiple times with the engine running and ensure there's no change in pedal reserve distance. For an airtightness check, start the engine and turn it off after a minute or two, then depress the brake pedal slowly. If the pedal initially goes down farther but gradually rises with subsequent depressions, the booster is airtight. Additionally, depress the brake pedal while the engine is running, then stop the engine while holding the pedal down; if there's no change in pedal reserve travel after 30 seconds, the booster is airtight. As for removal, the power brake booster unit doesn't require special maintenance and should never be disassembled; if an issue arises, it must be replaced. To start, remove vacuum from the booster by pumping the pedal with the engine off until it feels firm. Then, remove the battery and battery tray, and if applicable, detach the cruise control servo unit bracket. Remove the wiper motor and linkage assembly, and clean the area where the master cylinder attaches to the booster. Detach the master cylinder from the booster while keeping it supported and disconnect the vacuum hose from the check valve on the outside of the booster. Remove the knee bolster from the driver's side of the instrument panel. Under the dash, disconnect the brake pedal pushrod and replace the retaining clip for safety. Remove the nuts securing the booster to the firewall, and from the engine compartment, withdraw the booster unit. To install the booster, position it on the firewall and tighten the retaining nuts. Reconnect the brake pedal to the booster pushrod with a new retainer clip, and perform the remaining installation steps in reverse, ensuring a new vacuum seal is installed on the master cylinder before reattaching it to the booster. Finally, test the brake system's operation carefully before normal vehicle operation.
    Posted by MoparPartsGiant Specialist
    Q:
    How do you perform an airtightness check on the brake system for the 2007 Chrysler Town & Country? Posted by Customer
    A:
    Start the engine and turn it off after a minute or two, then depress the brake pedal slowly. If the pedal initially goes down farther but gradually rises with subsequent depressions, the booster is airtight. Additionally, depress the brake pedal while the engine is running, then stop the engine while holding the pedal down. If there's no change in pedal reserve travel after 30 seconds, the booster is airtight.
    Posted by MoparPartsGiant Specialist
    See expert answers on similar Brake Booster
    Q:
    Can the power brake booster unit be disassembled, and what is the recommended course of action if it's defective for the 1989 Dodge Grand Caravan? Posted by Customer
    A:
    Power brake booster units should not be disassembled, as they require special tools and are fairly complex. It is best to replace a defective booster unit with a new or rebuilt one.
    Posted by MoparPartsGiant Specialist
    See expert answers on similar Brake Booster
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine Mopar Part 4721721AA, the Right Choice

To ensure reliability, purchase Mopar part # 4721721AA Booster-Power Brake. It is sometimes referred to as Chrysler Brake Booster. For Mopar owners with dreams of keeping their vehicles running in prime condition, choosing OEM parts is a smart decision. Meticulously crafted, these parts follow strict factory specifications and are manufactured in top-notch facilities with advanced technologies. Furthermore, they undergo rigorous testing to ensure durability and safety, making them a reliable choice for Mopar owners. This part fits specific Chrysler Town & Country, Voyager models.

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