Pedders 803645 Heavy Duty Rear Suspension Conversion Kit for Hyundai Santa Fe TM

The Pedders Rear Suspension Conversion Kit 803645 is a matched rear suspension upgrade designed for the Hyundai Santa Fe TM 2.2 CRDi.

Developed for vehicles that regularly tow or operate with increased rear axle loads, this heavy-duty suspension package replaces the original rear springs and dampers with components engineered to work together as a complete system.

Pedders specifically lists part number 803645 for the Hyundai Santa Fe TM 2.2 CRDi from 2018-2023 internationally. For the UK market, the safely verified application is the earlier TM-generation 2.2 CRDi diesel, sold here from 2018 before Hyundai switched the UK Santa Fe range to Hybrid and Plug-in Hybrid powertrains.

Designed for Towing and Heavy Loads

Large SUVs such as the Santa Fe are frequently used for:

• Caravan towing
• Trailer towing
• Carrying several passengers
• Heavy luggage
• Camping equipment
• Tools and work equipment
• Roof boxes and holiday loads

Additional rear axle load can expose weaknesses in worn or standard suspension components, resulting in excessive rear suspension movement, reduced body control or sagging.

The Pedders 803645 system uses uprated rear springs together with matched dampers to improve suspension control under these conditions.

Heavy Duty Matched Suspension System

Rather than replacing only the springs or only the shock absorbers, Pedders supplies the 803645 as a complete rear suspension package.

The kit contains:

2 x Pedders 270242 TrakRyder rear coil springs

2 x Pedders 120380 rear shock absorbers

Pedders states that the springs and dampers are engineered and tested as a matched suspension system, helping provide controlled damping and predictable suspension behaviour.

Ideal Replacement for Self-Levelling Suspension

Pedders markets this suspension conversion system as a cost-effective alternative to the original self-levelling rear suspension arrangement fitted to applicable vehicles.

On self-levelling systems, the original spring may work together with a specialised damper that contributes to vehicle load support. Replacing only one component with a standard replacement can therefore produce incorrect suspension behaviour.

The Pedders conversion replaces the relevant components with conventional matched springs and dampers designed to support and control the rear of the vehicle together.

Pedders states that the conversion is a direct-fit installation and does not require major vehicle modifications.

Improved Stability When Loaded

Correctly functioning rear suspension is particularly important when towing.

Additional trailer nose weight and luggage can increase the load over the rear axle. Uprated springs help resist excessive compression while properly matched dampers control suspension movement.

Potential advantages include:

• Reduced rear suspension sag
• Improved control when towing
• Reduced excessive bouncing
• Better stability with luggage and passengers
• Improved recovery after bumps
• More controlled rear body movement
• Increased confidence during motorway towing
• Improved suspension durability for demanding use

The kit does not increase the manufacturer’s permitted gross vehicle weight, rear axle weight rating or towing limit. Vehicle loading and towing must always remain within Hyundai’s approved specifications.

Pedders TrakRyder Suspension Technology

Pedders develops suspension components specifically for replacement, towing, load-carrying and 4×4 applications.

The shock absorbers used in this conversion employ a heavy-duty twin-tube gas construction, and Pedders states that its dampers use reinforced double-welded mounting points for increased durability.

Using matched dampers and springs is particularly important on heavier SUVs because increasing spring rate without sufficient damping can result in excessive bouncing or reduced ride control.

Suitable for Everyday Driving

Although designed with towing and load-carrying performance in mind, the conversion can also be used as a replacement suspension solution for applicable Santa Fe vehicles used for normal road driving.

Owners should be aware that heavy-duty springs can produce a firmer ride when the vehicle is lightly loaded compared with softer original suspension components.

Professional Installation Recommended

The conversion uses direct replacement suspension components and is designed to work with existing OE mounting hardware.

Professional installation is recommended, particularly where the original vehicle uses self-levelling dampers.

After suspension work, inspect:

• Rear suspension bushes
• Top and lower shock mounts
• Spring seats
• Bump stops
• Anti-roll-bar links
• Tyres
• Wheel alignment

A wheel alignment check is recommended after significant suspension replacement work.

Key Features

• Heavy-duty rear suspension conversion kit
• Designed for Hyundai Santa Fe TM 2.2 CRDi
• Ideal for towing and increased load carrying
• Improved rear suspension control
• Helps reduce excessive rear-end sag under load
• Matched rear coil springs and shock absorbers
• Includes 2 x Pedders TrakRyder rear springs
• Includes 2 x Pedders rear shock absorbers
• Heavy-duty twin-tube gas shock construction
• Suitable replacement for applicable self-levelling suspension
• Direct bolt-in conversion
• No major vehicle modification required
• Springs and dampers designed to operate as a matched system
• Suitable for caravans, trailers, passengers and luggage
• Pedders warranty: 2 years / 40,000 km / 25,000 miles
• Pedders part number 803645

Technical Specifications

Manufacturer: Pedders

Product Type: Rear Suspension Conversion Kit

Manufacturer Part Number / MPN: 803645

SKU: 803645

Vehicle Application: Hyundai Santa Fe TM

Primary Engine Application: 2.2 CRDi diesel

Position: Rear axle

Suspension Type: Coil spring and shock absorber conversion

Duty Rating: Heavy Duty / Load Carrying & Towing

Ride Height: Designed around standard vehicle ride height rather than as a dedicated lift kit

Shock Type: Heavy-duty twin-tube gas shock absorber

Spring Type: Pedders TrakRyder heavy-duty coil spring

Kit Contents

• 2 x Pedders 270242 TrakRyder Coil Springs
• 2 x Pedders 120380 Shock Absorbers

Installation Type: Direct replacement / bolt-in conversion

Vehicle Modification Required: No major modification stated by Pedders

Warranty: 2 years / 40,000 km / 25,000 miles

Primary Usage:

• Towing
• Caravan towing
• Trailer towing
• Increased passenger loads
• Heavy luggage
• Load carrying
• Replacement of applicable self-levelling rear suspension

Important Note

This suspension kit does not increase the vehicle’s legally permitted payload, gross vehicle weight, axle rating or towing capacity.

Vehicle Fitment / Compatibility

Verified UK Application

Hyundai Santa Fe IV / TM

2018-2020 Hyundai Santa Fe TM 2.2 CRDi

UK launch specifications confirm the fourth-generation TM Santa Fe used Hyundai’s 2.2 CRDi R-series diesel producing 200PS and 440Nm, with SE, Premium and Premium SE trim levels available.

The engine fitted to the 2018-2020 TM 2.2 CRDi is catalogued as:

2,199cc 2.2 CRDi – D4HB

Independent vehicle and diagnostic catalogues identify the TM 2.2 CRDi as D4HB during this period.

Verified UK trims

SE

Premium

Premium SE

Depending on model year and transmission, Hyundai offered various 2WD/4WD and manual/automatic combinations within these trims. Suspension fitment should still be confirmed using the vehicle registration or VIN before ordering.

Not currently recommended for UK listing as compatible

Do not list the following as compatible unless separately confirmed by Pedders using the customer’s VIN:

• Santa Fe 1.6 T-GDi Hybrid
• Santa Fe 1.6 T-GDi Plug-in Hybrid
• 2021-2023 UK Hybrid models
• 2021-2023 UK Plug-in Hybrid models

Hyundai UK’s later TM range was officially offered with 1.6 T-GDi Hybrid and Plug-in Hybrid powertrains, despite Pedders’ general international catalogue describing 803645 as a 2018-2023 Santa Fe TM 2.2 CRDi application.

Recommendation: Customers with a 2021-2023 diesel import or non-UK-market Santa Fe should contact you with their VIN before ordering.

FAQ

Does Pedders 803645 fit a Hyundai Santa Fe TM?

Yes. Pedders lists 803645 for the Hyundai Santa Fe TM 2.2 CRDi. For UK-market vehicles, the clearest verified fitment is the 2018-2020 Santa Fe TM 2.2 CRDi.

Does Pedders 803645 fit the Hyundai Santa Fe 2.2 CRDi D4HB?

Yes. The UK-market 2018-2020 Santa Fe TM 2.2 CRDi uses the 2,199cc D4HB diesel engine and falls within the Pedders application.

Will this kit fit a 2021 Hyundai Santa Fe Hybrid?

Compatibility should not be assumed. UK 2021-on Santa Fe models were offered mainly with 1.6 T-GDi Hybrid and Plug-in Hybrid powertrains. Pedders’ 803645 catalogue application specifically refers to the 2.2 CRDi. Contact us with your registration or VIN before ordering.

Is Pedders 803645 suitable for towing a caravan?

Yes. The kit is specifically marketed as a heavy-duty load-carrying and towing suspension conversion. The uprated springs and matched dampers help control rear suspension movement when carrying additional load or trailer nose weight.

The kit does not increase the manufacturer’s permitted towing capacity.

Does the kit stop the rear of the Santa Fe sagging?

The uprated rear springs are designed to provide greater support under load and can reduce excessive rear suspension sag compared with worn or unsuitable original components.

Actual ride height will depend on vehicle condition, accessories, luggage and trailer nose weight.

Does this kit replace the self-levelling rear suspension?

For applicable Santa Fe models equipped with the relevant self-levelling rear suspension system, the Pedders conversion replaces the original arrangement with matched conventional coil springs and dampers.

What comes with Pedders kit 803645?

The kit contains:

• 2 x Pedders 270242 TrakRyder coil springs
• 2 x Pedders 120380 rear shock absorbers

This provides the main matched components required for both sides of the rear axle.

Will heavy-duty springs make my Santa Fe ride harder?

Potentially. Heavy-duty springs are designed to provide additional support under increased load. When the vehicle is completely unloaded, they may feel firmer than softer standard suspension.

For owners who frequently tow or carry passengers and luggage, the increased load support is normally the primary benefit.