Cognito Coil Spring Isolator Support | 2013-2025 Ram 3500 4WD & 2014-2024 Ram 2500 4WD

The Obsidian Vision

The front coil spring buckets on the 2013–2025 Ram 3500 4WD and 2014–2024 Ram 2500 4WD have a protrusion that is shorter than ideal for supporting the rubber OEM coil spring isolator — a factory design limitation that is tolerable at stock ride height but becomes a noise and durability problem when a lift or leveling kit changes the coil spring's load angle and allows the isolator and spring to slide forward and contact the frame. The Cognito Coil Spring Isolator Support is a 100% bolt-in, no-fabrication-required bracket that extends the support for the OEM front coil spring isolator, preventing the forward migration and frame contact that causes the rubbing noise associated with lifted and leveled Ram 2500/3500 4WD applications. Before ordering, one critical fitment requirement must be confirmed: this kit is compatible only with the non-Power Wagon OEM rubber isolator (p/n 05168566AB, 3-7/8" inside diameter). The Power Wagon isolator (p/n 68268825AA, 3-1/4" inside diameter) has a smaller inside diameter that will not fit over this support kit.

Concierge Fitment Guarantee

Every order is manually reviewed by our technicians to ensure 100% compatibility with your build before we ship.

Engineering Breakdown

• Eliminates the coil spring and rubber isolator forward migration that causes frame contact and rubbing noise on lifted and leveled 2013–2025 Ram 3500 4WD and 2014–2024 Ram 2500 4WD applications by extending the support surface of the factory coil spring bucket protrusion — providing the isolator retention geometry that the short factory protrusion cannot maintain when the coil spring's load angle changes at elevated ride heights.
• Installs as a 100% bolt-in addition to the factory coil spring bucket with no fabrication, cutting, or welding required — a direct solution to the isolator support deficit that the factory coil spring bucket design creates under lift and leveling kit conditions.
• Retains the OEM rubber coil spring isolator (p/n 05168566AB, 3-7/8" inside diameter) in its correct position against the coil spring bucket, preventing the isolator-to-frame contact that generates the rubbing and squeaking noise that lifted Ram 2500/3500 4WD owners experience without this support kit installed.

The factory coil spring bucket protrusion on the Ram 2500/3500 4WD platform provides minimal lateral support for the rubber coil spring isolator at stock ride height — the isolator sits on the protrusion and is held in position primarily by the coil spring's downward load. When a lift or leveling kit raises the front ride height, the coil spring's operating angle changes and the downward load component that retains the isolator against the protrusion decreases, allowing the isolator and spring to migrate forward under the lateral forces generated by driving. The Cognito support kit extends the protrusion geometry to provide the lateral retention required to keep the isolator in position at the elevated ride height. The kit is compatible only with the non-Power Wagon OEM isolator (p/n 05168566AB, 3-7/8" ID) — the Power Wagon isolator (p/n 68268825AA, 3-1/4" ID) has a smaller inside diameter that will not clear the extended support geometry of this kit. 100% bolt-in, no fabrication required.

Audit Table

Verified Fitment (OFAS Standard)

✅ CONFIRMED — Ram 3500 4WD (Non-Power Wagon):
2013–2025 Ram 3500 4WD — all trims except Power Wagon
Compatible with OEM coil spring isolator p/n 05168566AB (3-7/8" inside diameter)

✅ CONFIRMED — Ram 2500 4WD (Non-Power Wagon):
2014–2024 Ram 2500 4WD — all trims except Power Wagon
Compatible with OEM coil spring isolator p/n 05168566AB (3-7/8" inside diameter)

❌ REQUIREMENTS & CRITICAL NOTICES:
⚠️ NOT COMPATIBLE WITH POWER WAGON ISOLATOR (p/n 68268825AA): The Ram 2500/3500 Power Wagon uses OEM rubber coil spring isolator p/n 68268825AA with a 3-1/4" inside diameter. This smaller inside diameter will not fit over the Cognito isolator support kit. This kit is not compatible with Power Wagon models or any Ram 2500/3500 equipped with isolator p/n 68268825AA.
⚠️ VERIFY OEM ISOLATOR PART NUMBER BEFORE ORDERING: Confirm your truck's OEM coil spring isolator part number before ordering. Non-Power Wagon models use p/n 05168566AB (3-7/8" ID) — compatible. Power Wagon models use p/n 68268825AA (3-1/4" ID) — not compatible.
Recommended for use with any lift or leveling kit that raises the front ride height on the Ram 2500/3500 4WD platform — the isolator migration problem is most pronounced at elevated ride heights where the coil spring's load angle change is greatest.
4WD models only — 2WD Ram 2500/3500 models do not use the same front coil spring bucket configuration and do not require this kit.

Installation & Technical Notes

Estimated Install Time: Under 1 Hour DIY Install (100% bolt-in, no fabrication — basic hand tools and a floor jack required to unload the front coil springs for access)
Isolator Verification: Before installation, remove the front coil spring and inspect the OEM rubber isolator. Verify the part number is 05168566AB (3-7/8" inside diameter) before installing the support kit. If the isolator is p/n 68268825AA (Power Wagon, 3-1/4" ID), this kit is not compatible.
Install Sequence: Unload the front coil spring to access the coil spring bucket. Install the Cognito isolator support bracket at the factory bolt locations. Reinstall the OEM rubber isolator over the extended support and reinstall the coil spring. Verify the isolator is fully seated on the support before loading the spring.
Torque Specifications: Torque all mounting hardware to the specification provided in Cognito's included instruction sheet.
Post-Installation Check: After installation, verify the coil spring and isolator are correctly seated and the isolator is not contacting the frame at full compression before driving.

Wheel & Tire Fitment

This is a front suspension isolator retention component — wheel and tire fitment is determined by the lift or leveling kit installed on the vehicle. This support kit is compatible with all lift and leveling configurations on the 2013–2025 Ram 3500 4WD and 2014–2024 Ram 2500 4WD platform that use the non-Power Wagon OEM coil spring isolator (p/n 05168566AB).

Our team is standing by to verify your specific Ram 2500/3500 isolator part number and confirm 115-91310 is compatible with your build. Purchase with confidence; we review every build.