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S-2572-HRX, Super Kit, OEM or MML Motor Mounts, Engine Brackets
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S-2572-HRX, Super Kit, OEM or MML Motor Mounts, Engine Brackets

Store / Jeep Comanche MJ Parts / 87-90 Comanche MJ 4.0L
$494.95
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MML Height
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In stock
Product Details

1987-1990 I6 4.0L Cherokee XJ and Comanche MJ with original manifold or aftermarket headers, includes Super Engine Brackets, pair of Motor Mounts, Grade 8 installation hardware and Renix Knock Sensor Adapter. Made in USA.

Change to the Brown Dog engine mount system and never have to do it again.

  • Super Strong Engine Brackets for either original-style manifold or aftermarket header - 7 Bolts, Left; 8 Bolts, Right
  • High Performance Classic Polyurethane Motor Mounts - Stock Height
  • All Grade 8 or M10.9 Hardware, including through bolts .

Super Engine Brackets virtually eliminate offroad torsional forces snapping bolts or ripping the bracket from the case. Featuring more attach points than the original brackets, the design spreads engine block attachment stress loads. Left bracket features seven bolts, four more than the original. Right bracket features eight bolts, five more than the original. Double-welded, all-steel construction for extra strength. No engine block modification necessary. Bolts directly to existing 4.0L or 4.2L Jeep engine block bolt pattern. Designed for use in Cherokee XJ and Comanche MJ.

Designed to accommodate both original-style manifold and aftermarket headers. According to header manufacturer's warranty staff, one of the leading causes of cracked headers is worn motor mounts and cracked/worn brackets. (Of course, worn or missing exhaust hangars/brackets also can cause cracks.) This Brown Dog bracket design works with your original manifold or Banks, Borla, Pace Setter, Edelbrock, and many other common headers. The bracket and mounts, when used together, offer a little more room in the exhaust area to assure no conflict. So why risk cracking a header? Secure your engine and header in place with Brown Dog motor mounts and brackets .

High Performance Motor Mounts feature all-steel, double-welded construction. Stock-height, these are high-strength replacements for the originals. Designed to stand up to the toughest trails Arizona can dish out. (Sorry Utah, we can't stand the cold.) When compared to the originals and most others, these are a substantial upgrade. The original mounts, designed for street driving, simply won't stand up to the torsional stress experienced offroad.

Interchangeable Ultra-Flex Rubber bushings. Featuring Ultra-Flex Rubber bushings, these Motor Mounts will dampen some drive line vibration. Want a sportier feel for your rig? Select Classic Polyurethane Motor Mounts in the S2572-0HRX kit instead. Not sure which is better for you? Compare here.

Ships with Grade 8 Hardware(or 10.9 metric equivalent ) required to bolt engine brackets to existing engine block bolt pattern. Also includes new Grade 8 thru-bolts, lock nuts and washers for securing brackets to motor mounts.

Application Notes:
  • 1987, 1988, 1989, 1990 4.0L Comanche MJ with Renix fuel system
  • 1987, 1988, 1989, 1990 4.0L Cherokee XJ with Renix fuel system
  • Some engine blocks in this period did not have the thread bosses later used for the coil pack. If your block does not have these holes, you will not be able to take advantage of two holes in the right bracket. They will simply be left empty.
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S-2572-HRX, Super Kit, OEM or MML Motor Mounts, Engine Brackets
Store / Jeep Comanche MJ Parts / 87-90 Comanche MJ 4.0L
Display prices in: USD
Frequently asked questions

Find answers to your commonly asked questions about Brown Dog Offroad here.

  • Why is Brown Dog Offroad so popular?

    Our popularity comes from decades of dedication to quality, real-world testing, and building connections with Jeep enthusiasts who demand the best jeep parts. We started with a simple mission: to design jeep parts that never let anyone down, even on the toughest trails. Inspired by offroad adventures and forged in the demanding landscapes near Phoenix, our team handcrafts every product, ensuring each jeep part offers ultimate performance and reliability. Customers trust our jeep parts because we have proven they hold up under extreme conditions and every product is engineered to last. Whether you drive a vintage Jeep or a modern model, we focus on supplying the proper jeep parts tailored to your vehicle. Our deep roots in the Jeep community and relentless pursuit of excellence keep customers coming back for the most resilient jeep parts. Additionally, our commitment to customer service sets us apart, as we don’t just sell jeep parts; we build relationships with our customers to ensure they find exactly what they need for their unique offroad adventures. Discover the difference for yourself and reach out today if you need help finding the right fit.

  • Where can I buy Jeep parts online in Phoenix?

    You can buy top-quality Jeep parts online right here through our website. We specialize in everything from engine mounts to offroad accessories, focusing on the needs of Phoenix Jeep enthusiasts. Our secure payment portal makes ordering simple, and our catalog is tailored to the most popular Jeep models. We ship directly to Phoenix for your convenience. Shop now or contact us with any questions about the best parts for your Jeep.

  • What is the difference between Ultra-Flex rubber motor mounts and standard mounts for a Jeep?

    Ultra-Flex rubber motor mounts are designed to handle more stress and movement compared to standard mounts. They offer greater vibration dampening and flexibility, which helps protect your Jeep’s engine and frame during intense offroad rides. Ultra-Flex mounts are engineered to withstand rough terrain and heavy use, making them a smart upgrade for Jeep owners focused on performance and durability. Ready to upgrade your mounts? Browse our options or ask our team for personalized recommendations.

  • Which Jeep models do you offer parts for?

    We craft and supply parts for the most popular Jeep models, including Jeep Wrangler YJ, Jeep Wrangler TJ, Jeep Cherokee XJ, and Jeep Comanche. Our selection includes engine mounts, brackets, performance parts, and restoration pieces, all tested for trail-worthy reliability. If you’re not sure which part fits your model, reach out to our team and we’ll guide you to the best choice for your Jeep.

  • How do I replace a motor mount in my Jeep?

    Replacing a motor mount involves supporting the engine, removing the old mount, and installing the new part, making sure everything is properly aligned and secure. We recommend using high-quality mounts designed for your specific Jeep model for optimal results. Our kits are engineered for straightforward installation, even for DIY enthusiasts. For guidance on choosing or installing the right motor mount, contact us before you start your project.

  • What payment and shipping options do you offer?

    We accept major credit cards and offer a secure online payment system for worry-free transactions. Orders can be shipped nationwide, and we work with trusted carriers to ensure your jeep parts arrive quickly and safely. You can track your order through our website and reach out to our team if you need assistance with shipping or payment questions. Visit our shop or contact us for further details.