2021 International RH Parts
Our catalog shows a single engine for the 2021 International RH: the 12.4L L6 DIESEL Turbocharged. All 130 parts listed for this model year are matched to it — browse them by category below.
Every part carries its brand and manufacturer part number, so you can compare OEM-grade and aftermarket options for the same fitment and cross-reference the number against the part you're replacing before anything goes in the cart.
Browse by Engine
Not sure which engine you have? Check the emissions label under the hood, your registration, or decode the VIN — the 8th character usually identifies the engine.
Parts by Category
Belt Drive Parts
17 parts · 3 subcategories · 6 brands Verified fitment Spins the accessories — serpentine and V-belts, tensioners, idlers and pulleys.Body & Lamp Assembly Parts
4 parts · 3 subcategories · 1 brand Verified fitment Covers the exterior panels, bumpers, mirrors, lamps and the trim that keeps weather and road debris out.Brake & Wheel Hub Parts
22 parts · 5 subcategories · 5 brands Verified fitment Handles stopping power and keeps each wheel turning true on its bearing and hub assembly.Cooling System Parts
29 parts · 8 subcategories · 12 brands Verified fitment Keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.Drivetrain Parts
1 part · 1 subcategory · 1 brand Verified fitment Moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.Electrical Parts
9 parts · 3 subcategories · 6 brands Verified fitment Covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.Electrical Switch & Relay Parts
2 parts · 2 subcategories · 1 brand Verified fitment Covers the switches, relays and flashers that route power to everything the driver touches.Engine Parts
4 parts · 1 subcategory · 4 brands Verified fitment Covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.Exhaust & Emission Parts
7 parts · 3 subcategories · 3 brands Verified fitment Carries combustion gases out safely and keeps emissions equipment — catalytic converters, O2 sensors, EGR — doing its job.Fuel & Air Parts
11 parts · 3 subcategories · 5 brands Verified fitment Meters fuel and air — pumps, injectors, filters, intake components and the sensors that balance the mixture.Heat & Air Conditioning Parts
16 parts · 6 subcategories · 8 brands Verified fitment Keeps the cabin comfortable and the windshield clear through the compressor, condenser, evaporator, heater core and blower.Interior Parts
2 parts · 1 subcategory · 1 brand Verified fitment Covers cabin hardware — seat components, handles, switch bezels, carpet, pedals and the pieces that take daily wear.Steering Parts
1 part · 1 subcategory · 1 brand Verified fitment Connects driver to road through the rack, pump, tie rods, and column components.Automatic Transmission Parts
5 parts · 1 subcategory · 4 brands Verified fitment Covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.Confirm your configuration
Other International RH Years
Getting Fitment Right on the 2021 International RH
The 2021 International RH shipped with a single engine — the 12.4L L6 DIESEL Turbocharged — which keeps fitment straightforward: all 130 parts listed for this model year are matched to that configuration. What still deserves attention is the notes column on each part, where position (front/rear, left/right), trim and production-date qualifiers live.
OEM-grade and aftermarket brands are listed together wherever both publish fitment for the 2021 International RH, each with a full part number. That makes the practical workflow simple: find the subcategory, match the part number against your old part or repair quote, then choose the brand and grade that fits how the vehicle is used.
Frequently Asked Questions
How many parts fit the 2021 International RH?
We list 130 parts for the 2021 International RH, organized into 14 categories. Every part includes the brand, manufacturer part number and fitment notes.
Which engine does the 2021 International RH have?
A single engine is listed for this model year: the 12.4L L6 DIESEL Turbocharged. Every part listed for the 2021 International RH is matched to it, so there's no engine ambiguity — just check the notes column for position and trim qualifiers.
Are OEM and aftermarket parts both available for the 2021 International RH?
Yes — parts come from original-equipment suppliers and established aftermarket brands, shown side by side with their part numbers where both cover the same fitment. Cross-referencing those numbers is how you confirm an aftermarket part genuinely replaces the OEM one.
How do I verify a part number fits my 2021 International RH?
Search the number on this site: the result shows the part, its brand and every configuration with published fitment. If your exact year, model appear in that list, the number is a match. The notes column carries any remaining qualifiers — position, trim or production date.
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.