--- product_id: 27277307 title: "Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit" brand: "suncore" price: "353584CFA" currency: XOF in_stock: true reviews_count: 8 category: "Suncore" url: https://www.desertcart.sn/products/27277307-suncore-40f-30-hd-air-ride-suspension-heavy-duty-rear store_origin: SN region: Senegal --- # Rear suspension conversion for Panther platform Heavy-duty coil springs for durability Includes mounting isolators for easy install Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit **Brand:** suncore **Price:** 353584CFA **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your ride with heavy-duty precision and unmatched stability! ## Quick Answers - **What is this?** Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit by suncore - **How much does it cost?** 353584CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/27277307-suncore-40f-30-hd-air-ride-suspension-heavy-duty-rear) ## Best For - suncore enthusiasts ## Why This Product - Trusted suncore brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Peace of Mind Warranty:** Backed by a 1-year manufacturer’s warranty, so you can upgrade confidently. - • **Rock-Solid Rear Support:** Convert your air ride to a reliable coil spring setup designed for Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis. - • **Complete Installation Kit:** Includes 2 coil springs and 4 rubber isolators for a seamless swap from air to coil suspension. - • **Commercial-Grade Durability:** Built heavy-duty to withstand demanding use, ensuring long-lasting performance on every drive. - • **Enhanced Ride Height & Stability:** Raises rear suspension for improved cornering and a sportier, firmer ride without sacrificing comfort. ## Overview The Suncore 40F-30-HD is a heavy-duty rear air to coil spring conversion kit designed for Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis models. It includes two coil springs and four rubber isolators, providing a firmer, higher rear ride height and improved cornering stability. Ideal for commercial use, this kit replaces air suspension with durable coil springs, backed by a 1-year manufacturer warranty for reliable performance. ## Description Buy Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit: Air Suspension Kits - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: They ride great - These were a breeze to install on my 2005 Grand Marquis Ultimate edition. I converted from Air bags. These ride well and have a good ride height! Review: Remove the sag from the bag - I bought these to replace the standard spring kit that I originally bought to replace the air bags . Not only do they help get rid of the bag sag but they offer a sportier firmer ride without loosing any significant comfort (this also depends on your tires and shocks YMMV) The car will sit higher in the rear then the average panther platform car with airbags or the standard springs after they take their initial set . If you want a lower ride look the HD replacement springs may not be for you, as for me I have a Limo suspension on my car ( Reasons +++ sized American and I live in a rural area ) so the front of my car is abnormally higher then the rear and the HD kit helped raise it up closer to level (still lower on my car due to the stiffer front end setup of the Limo suspension on specific car) If you have a standard front end height this will get you level or a little higher in the rear on most cars and better cornering stability in my opinion. My over all ride quality is not as soft as my car was with the factory suspension but it is not sports car stiff either and for my general purpose and everyday driving on Texas roads it is very comfortable and it no longer bottoms out when you get out in the rough stuff and has less body roll for my specific setup . Installation was a little harder then the standard replacement spring kits due to the stiffer coils but still something that can be done in the driveway with the right tools and help from a friend . ***** Warning be very careful any time you work on anything under a vehicle and do not attempt if you can not properly support the vehicle and springs under a load are very dangerous ***** ## Features - Replacement for Ford Crown Victoria or Lincoln Town Car and Mercury Grand Marquis, Marauder - Includes (2) Springs (4) Rubber Isolators Converting Air/Electronic Suspension to Standard Suspension - Heavy Duty - For Commercial Use - One Year Manufacturer's Warranty - (2) Coil Springs with Mounting Isolators ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003XVLPK2 | | Best Sellers Rank | #655,849 in Automotive ( See Top 100 in Automotive ) #1,082 in Automotive Replacement Air Suspension Kits | | Brand | Suncore | | Customer Reviews | 4.5 4.5 out of 5 stars (108) | | Date First Available | August 4, 2010 | | Is Discontinued By Manufacturer | No | | Item Weight | 30 pounds | | Item model number | 40F-30-HD | | Manufacturer | SUNCORE | | Manufacturer Part Number | 40F-30-HD | | OEM Part Number | 3U2Z5580BA, 3U2Z5580PA, 6W1Z5560AA | | Position | Rear | | Product Dimensions | 7.38 x 13.5 x 18 inches | ## Images ![Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit - Image 1](https://m.media-amazon.com/images/I/613gITwL0dL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ They ride great *by M***F on January 25, 2026* These were a breeze to install on my 2005 Grand Marquis Ultimate edition. I converted from Air bags. These ride well and have a good ride height! ### ⭐⭐⭐⭐⭐ Remove the sag from the bag *by S***. on May 13, 2022* I bought these to replace the standard spring kit that I originally bought to replace the air bags . Not only do they help get rid of the bag sag but they offer a sportier firmer ride without loosing any significant comfort (this also depends on your tires and shocks YMMV) The car will sit higher in the rear then the average panther platform car with airbags or the standard springs after they take their initial set . If you want a lower ride look the HD replacement springs may not be for you, as for me I have a Limo suspension on my car ( Reasons +++ sized American and I live in a rural area ) so the front of my car is abnormally higher then the rear and the HD kit helped raise it up closer to level (still lower on my car due to the stiffer front end setup of the Limo suspension on specific car) If you have a standard front end height this will get you level or a little higher in the rear on most cars and better cornering stability in my opinion. My over all ride quality is not as soft as my car was with the factory suspension but it is not sports car stiff either and for my general purpose and everyday driving on Texas roads it is very comfortable and it no longer bottoms out when you get out in the rough stuff and has less body roll for my specific setup . Installation was a little harder then the standard replacement spring kits due to the stiffer coils but still something that can be done in the driveway with the right tools and help from a friend . ***** Warning be very careful any time you work on anything under a vehicle and do not attempt if you can not properly support the vehicle and springs under a load are very dangerous ***** ### ⭐⭐⭐⭐⭐ Just a plug and play *by C***E on February 10, 2026* Love them very strong havy duty 💪 ## Frequently Bought Together - Suncore 40F-30-HD Air Ride Suspension Heavy Duty Rear Air to Coil Spring Conversion Kit - Front Suspension Electronic to Passive Coil Over Gas Strut Conversion Kit - Dorman 949-006 Air Suspension Compressor Line Repair Kit Compatible with Select Cadillac / Chevrolet / GMC Models --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/27277307-suncore-40f-30-hd-air-ride-suspension-heavy-duty-rear](https://www.desertcart.sn/products/27277307-suncore-40f-30-hd-air-ride-suspension-heavy-duty-rear) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-11-14*