2003-2018 Cummins 5.9L/6.7L 24V Manton Conical Valve Spring Kit (D-105-KIT-24v)
Transform your Cummins engine with Manton’s complete valve spring and retainer kit, designed to enhance performance, durability, and longevity. This drop-in package offers 105 lbs. of seat pressure and 165 lbs. of open pressure at 0.420 lift, crucial for vehicles with upgraded performance cams.
Engineered with Manton’s exclusive “Pressure Tower” conical spring design and “Ultra Light” steel retainers, this kit ensures the highest strength-to-weight ratio and unmatched reliability across any application, whether your truck serves daily commutes or competitive racing.
The springs are optimized for up to 75 PSI boost, backed by 105 lbs. of seat pressure. Manton provides heat-treated spring shims to adjust seat pressure as needed for different boost levels. For older trucks from 1998.5 to 2002, where valve spring pockets may be too tight, Manton offers a valve spring pocket cutter to enlarge the pocket for a perfect fit with this advanced spring kit.
Order Processing Time:
Orders are typically processed within 24-48 hours after the order has been placed.
Custom or special order items may take longer to process, typically 3-5 business days depending on the product and customization required.
Shipping Methods:
Standard Shipping (3-7 business days - location dependent)
Express Shipping (1-2 business days- location dependent)
Packaging:
All parts are securely packaged to better prevent any damage during transit. Fragile or high-value parts will be packaged with additional protective materials, such as bubble wrap or foam padding.
Shipping Rates:
Shipping rates vary based on the size, weight, and destination of the package. You can view the estimated shipping costs for your order during the checkout process before placing your order.
Order Tracking:
Once your order has been shipped, you will receive an email with the tracking number and carrier information. You can also track your order status by logging into your OCDiesel account.
USA Shipping:
We ship to the USA! (Except California) Please note that USA shipping rates and delivery times may vary based on destination. Customers are responsible for any customs fees, import taxes, or additional charges that may apply.
Not all products are stocked in-house. To ensure you receive your desired items promptly, please check for availability before placing your order. Some products may be backordered due to high demand or supply chain constraints, which could result in longer delivery times.
We strive to keep our inventory updated regularly, but availability can change quickly. For the most accurate information, contact the OCDiesel customer service team using either this link, or the chat bubble on the bottom right of this page.
