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    Roadmaster

    Roadmaster Towed Vehicle Brake Control Air Line Quick Disconnect – BrakeMaster ™, Male With L Shaped | 921004-50

    Roadmaster Towed Vehicle Brake Control Air Line Quick Disconnect – BrakeMaster ™, Male With L Shaped | 921004-50

    $51.90 USD
    MSRP $54.19 USD Our price $51.90 USD
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    Why buy from RV Towing Pros

    • Genuine new partsBrand-new Roadmaster, never used or refurbished
    • Fit GuaranteeSend us your vehicle and we’ll confirm fit before you order. How it works
    • Ships in 5–8 business daysIn-stock parts; express available at checkout
    • Secure checkout & 30-day returnsPay with card, Shop Pay, PayPal and more

    Questions? Message us — we answer within 1 business day.

    Pro tipSupplemental braking: what to know

    • Often required by law. Most U.S. states and Canadian provinces require brakes on a towed vehicle above a certain weight, and towing equipment makers generally expect one.
    • Match your motorhome. Some systems are designed for coaches with air brakes and others for hydraulic brakes — check which your RV has.
    • Portable vs. permanently installed. Portable units move between cars; installed systems are quicker to hook up day to day.

    Not sure what fits? Send us your vehicle — we’ll confirm before you order.

    Our Fit Guarantee Tell us your vehicle before you order and we’ll confirm the part fits. If we confirmed it and it doesn’t fit, we’ll cover return shipping and waive the restocking fee. Check my fit

    Shipping & Returns

    In-stock parts: standard shipping 5-8 business days, express available at checkout. Out-of-stock and special-order parts: 3-5 weeks. Returns accepted within 30 days of delivery (20% restocking fee; buyer pays return shipping unless we made an error).

    Fit Guarantee: if you sent us your vehicle details before ordering and we confirmed fit, but the part doesn't fit, we cover return shipping and waive the restocking fee.

    Questions? Message us — we answer within 1 business day.

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    Product Description

    Keep your supplemental braking system working the way it should. Genuine parts deliver a direct fit and dependable stopping power for your towed vehicle.

    We’re the towing experts. ROADMASTER is devoted to developing and manufacturing the highest-quality tow bars, tow bar brackets, supplemental braking systems and anti-sway bars available — everything to make your towing experience safe and pleasurable.

    Roadmaster 94-4039 Towed Vehicle Brake Control Air Line Quick Disconnect; BrakeMaster ™; For Brakemaster Towed Vehicle Brake Control; Male With L Shaped Bracket.

    Fitment: Brakemaster Towed Vehicle Brake Control. Please confirm fit for your vehicle or hitch before ordering.

    Key Features & Benefits

    • Limited 1 Year Warranty

    Specifications

    • Manufacturer: Roadmaster
    • Part number: 921004-50
    • Compatibility: Brakemaster Towed Vehicle Brake Control
    • Type: Bracket
    • Estimated Install Time (Hours): 0.25

    Shipping & Availability

    Special Order: this item ships directly from the manufacturer in approximately 3–5 weeks. Special-order shipping applies.

    Tow safer and stay compliant. Add this braking part to your cart.

    Own this part? Be the first to review it.

    Your experience helps other RVers choose with confidence. Tell us what you tow, how installation went and how it’s held up on the road.

    ✓ Takes about 2 minutes✓ Photos of your rig are a big help