Answering the search intent for Town Car owners seeking a smoother, more controllable ride: air-to-coil conversion kits can convert factory air suspension to coil springs with performance and comfort benefits. The top picks below are best for converting 1989–2011 Lincoln Town Car, Mercury Grand Marquis, and Ford Crown Victoria models. The buyer profiles are noted to help you decide who should consider each kit, from budget-conscious owners to daily drivers needing a reliable swap.
| Product | Best For | Why This Kit Stands Out |
|---|---|---|
| OREDY Rear Shocks Kit | Budget-friendly conversions for late-model Town Cars | Includes rear shocks converted for air-to-coil needs; suitable for full-size sedans requiring basic swap. |
| Monroe 90004C Air Spring to Coil Conversion | Trusted brand with straightforward installation | Air-to-coil conversion designed for Grand Marquis without major chassis changes. |
| SUNCORE Rear Air Ride to Coil Springs Kit | 1989–2011 Lincoln Town Car enthusiasts | Broad year compatibility and a full rear conversion kit for ride height control without air bags. |
| Detroit Axle Rear Struts with Coil Springs | Comprehensive replacement with quick install | Two complete struts mounting coil springs; good for a complete rear suspension refresh. |
| Rear Shock Conversion Kit 90004 (2 pcs) | Compact, reliable two-piece kit | Two-piece air-to-coil conversion designed for multiple Town Car-family models. |
OREDY Rear Shocks for Crown Victoria Town Car Grand Marquis Conversion Kit
Best for: Owners seeking a straightforward rear conversion with established compatibility across 2003–2011 Ford, Lincoln, and Mercury full-size sedans. This kit targets rear suspension upgrades by replacing stock components with a coil-spring approach linked to a sealed system. The listed features emphasize compatibility across multiple model years and a practical swap path for those on a moderate budget. Choose this if you want a simple retrofit without front-end work and prefer a brand with broad vehicle coverage.
Limitations: Data notes do not specify front-end changes. A full assessment is recommended to confirm fitment with your exact trim and any running gear modifications.
Monroe 90004C Air Spring to Coil Spring Conversion Kit for Mercury Grand Marquis
Best for: Mercury Grand Marquis owners who want a recognized aftermarket brand with a clear air-to-coil conversion path. The kit aligns with Grand Marquis models and aims to restore ride height and control by replacing air elements with coil springs. It is a solid option when consistency and a reputable brand are priorities.
Limitations: The assembly may require additional hardware or alignment steps depending on the exact year and trim; verify total component counts before purchase.
SUNCORE Rear Air Ride Suspension to Coil Springs Conversion Kit
Best for: Lincoln Town Car owners seeking a wide-year-range conversion with a focus on rear suspension performance. The kit is designed to replace rear air-ride systems with coil springs, providing a more predictable ride profile and easier maintenance compared with air components.
Limitations: The kit appears to target rear suspension only; front-end considerations may require separate evaluation if you plan a full vehicle-wide upgrade.
Detroit Axle Rear Struts with Coil Springs
Best for: Shoppers wanting a complete rear suspension refresh with coil springs included. This option provides two struts with coil springs, suitable for restoring ride height and improving stability in the rear. It’s a practical choice for a straightforward swap during a larger restoration or maintenance cycle.
Limitations: It focuses on rear components; ensure the front suspension is compatible with your vehicle’s year and trim if you plan a full conversion.
Rear Shock Conversion Kit Air to Coil Spring for 2003-2011 Lincoln Town Car | 90004 2PCs
Best for: Town Car owners seeking a compact, two-piece conversion that pairs air-to-coil components for efficient rear suspension upgrades across multiple 2003–2011 model years. The two-piece design supports simpler handling during installation and good compatibility with Crown Victoria and Grand Marquis variants.
Limitations: This kit emphasizes rear conversion; verify compatibility with any aftermarket parts in the front and confirm the exact year alignment for your vehicle.
Buying Guide
What should I consider when choosing a town car air suspension conversion?
Compatibility: Check your model year, trim level, and whether the kit targets the rear or full suspension. Some kits are designed specifically for Lincoln Town Car, Crown Victoria, or Grand Marquis variants.
- Rear vs. full suspension: If you only need to improve rear ride quality, a rear-only kit may suffice and reduce installation complexity.
- Component coverage: Some kits include two rear shocks or struts with coil springs, while others provide complete assemblies for the rear axle. Ensure the kit covers what you need.
- Brand trust and availability: Reputable brands often provide clearer installation guidance and better compatibility documentation.
- Year range: Confirm the kit supports your exact model year to avoid fitment issues.
Installation considerations
- Tools and space: A comfortable garage space with common automotive tools typically suffices for straightforward rear swaps; front-end work may require more equipment.
- Alignment and road test: After conversion, a basic alignment check helps prevent uneven tire wear and handling quirks.
- Professional vs. DIY: If the kit involves critical suspension components, professional installation can minimize risks and ensure proper torque and mounting.
Performance and ride quality expectations
Switching from air to coil springs generally aims to restore predictable handling, consistent ride height, and easier maintenance. Expect a firmer ride in some configurations but improved reliability and reduced high-maintenance elements associated with air suspension systems.
Compatibility notes for common models
- Lincoln Town Car (1989–2011): Many rear-only and full-conversion kits target this long-running sedan family with similar suspension layouts.
- Mercury Grand Marquis: Kits designed for Grand Marquis often align with the shared chassis of the Town Car family, particularly for rear conversions.
- Ford Crown Victoria: Conversion kits commonly address the rear suspension while ensuring compatibility with the common police and fleet variants.
FAQ
Q1: Do these kits require professional installation? A1: Some kits are straightforward enough for DIY with basic tools; others benefit from professional installation, especially if you plan a full rear-to-front suspension swap or encounter mounting challenges.
Q2: Will this improve ride height and stability? A2: Yes, converting air suspension to coil springs can restore ride height and improve stability, depending on kit quality and correct installation.
Q3: Are these kits compatible with all trims of the Town Car family? A3: Most kits target common chassis years and may vary by trim. Always verify fitment against your exact year and model before purchasing.
Q4: Do these kits include all necessary components? A4: Many listed kits provide rear shocks or struts with coil springs; some offer two-piece assemblies. Review the included components to ensure you have everything needed for a complete conversion.
Q5: Can I mix components from different brands? A5: Mixing brands is not generally recommended due to potential mounting differences and ride characteristics. Use the kit’s recommended components as a baseline.
Q6: Will I still need alignment after installation? A6: Yes, an alignment is usually recommended after suspension work to ensure optimal tire wear and steering performance.