Recommended Maintenance & Wear Parts for a 2021 Honda Ridgeline
The common service parts a 2021 Honda Ridgeline needs — typical replacement intervals, what to watch for, and where to buy each one. Confirm exact fitment by VIN before purchasing.
Honda’s maintenance schedule for the 2021 Honda Ridgeline lists the engine air filter every 15,000 mi and cabin air filter every 15,000 mi. The other 13 parts below have no interval in that schedule and are replaced on condition; the ranges shown for them are general guidelines for all cars. TecDoc part numbers are on file for 6 of the 15 parts on the 3.5 L petrol, 6-cyl, 284 hp engine. NHTSA also lists 7 safety recalls for this model, most often for the air bags (2).
Last updated: · Specs: NHTSA vPIC · Recalls: NHTSA
2021 Honda Ridgeline maintenance & wear parts
Intervals marked OEM are manufacturer-recommended for this vehicle; the rest are typical guidelines. Your real schedule still varies by engine, trim and driving conditions — Always follow your owner's manual and confirm the exact part by VIN before buying.
| Part | System | Interval | Common signs | Part no. (TecDoc) | Shop |
|---|---|---|---|---|---|
| Brake Pads | Brakes | General: Every 40,000–70,000 km | Squeal, grinding, longer stops | 8DB 355 040-461 HELLA | Shop → |
| Brake Rotors | Brakes | General: With pads / if warped | Pedal pulsation, deep scoring | 09.E232.11 BREMBO | Shop → |
| Oil Filter | Engine | General: Every oil change (8,000–16,000 km) | Replaced with the oil | SO-1010 K&N Filters | Shop → |
| Engine Air Filter | Engine | Every 15,000 mi OEM | Low MPG, weak acceleration | 33-5041 K&N Filters | Shop → |
| Cabin Air Filter | HVAC | Every 15,000 mi OEM | Weak airflow, musty smell | VF2001 K&N Filters | Shop → |
| Spark Plugs | Ignition | General: 50,000 km (copper) – 160,000 km (iridium) | Rough idle, misfires | — | Shop → |
| 12V Battery | Electrical | General: Every 3–5 years | Slow crank, dim lights | — | Shop → |
| Alternator | Electrical | General: As needed (no fixed interval) | Battery light, dimming lights | — | Shop → |
| Starter Motor | Electrical | General: As needed (no fixed interval) | Click on start, no-crank | — | Shop → |
| Wiper Blades | Exterior | General: Every 6–12 months | Streaking, chattering | AD26HY660 BLUE PRINT | Shop → |
| Headlight Bulbs | Lighting | General: As needed (when dim or out) | One side dim or burnt out | — | Shop → |
| Serpentine Belt | Engine | General: Every 80,000–160,000 km | Squeal on cold start, cracks | — | Shop → |
| Fuel Filter | Fuel System | General: 50,000–100,000 km (or lifetime in-tank) | Hard start, hesitation | — | Shop → |
| Radiator | Cooling | General: As needed (leaks / overheating) | Overheating, coolant leak | — | Shop → |
| Water Pump | Cooling | General: Often done with the timing belt | Coolant leak, whine, overheat | — | Shop → |
2021 Honda Ridgeline specifications
| Specification | Value |
|---|---|
| Make | Honda |
| Model | Ridgeline |
| Model Year | 2021 |
| Overall Length (mm) | 5330 |
| Overall Width (mm) | 2000 |
| Overall Height (mm) | 1800 |
| Wheelbase (mm) | 3180 |
| Curb Weight (kg) | 2015 |
| Front Bumper to Windshield Base (mm) | 1140 |
| Side Glass Height (mm) | 450 |
| Side Glass Base to Rocker Panel (mm) | 930 |
| Roof Width Between Side Rails (mm) | 1280 |
| Front Overhang (mm) | 970 |
| Rear Overhang (mm) | 1180 |
| Front Track Width (mm) | 1680 |
| Rear Track Width (mm) | 1690 |
| Weight Distribution, Front/Rear (%) | 58/42 |
| Models Honda offered in 2021 | 107 |
Source: NHTSA vPIC / Canadian Vehicle Specifications. Linear dimensions in mm; weight in kg. Your exact build may vary by trim — decode your VIN to confirm.
Open recalls on the 2021 Honda Ridgeline (7)
The NHTSA database lists 7 safety recalls for the 2021 Honda Ridgeline, affecting: SEAT BELTS, VISIBILITY, SERVICE BRAKES, HYDRAULIC, AIR BAGS, BACK OVER PREVENTION, STRUCTURE. A recall repair is free at a franchised dealer. Check whether yours is affected by your exact VIN.
| Component | Summary |
|---|---|
| SEAT BELTS · REAR/OTHER | Honda (American Honda Motor Co.) is recalling certain 2021 Accord Sedan, Accord Hybrid, CR-V, Ridgeline, 2022 Insight and CR-V Hybrid vehicles. The automatic locking retractor on … |
| VISIBILITY · REARVIEW MIRRORS/DEVICES | Honda (American Honda Motor Co) is recalling certain 2020-2021 Pilot and Ridgeline, and 2020-2022 Passport and Odyssey vehicles. The heating pads behind both side-view mirrors may… |
| SERVICE BRAKES, HYDRAULIC · FOUNDATION COMPONENTS | Honda (American Honda Motor Co.) is recalling certain 2020-2021 Civic, 2020-2023 Ridgeline, 2021-2023 Passport, 2021-2022 Pilot, and 2020 Acura MDX vehicles. The tie rod fastener … |
| AIR BAGS · SENSOR | Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insi… |
| BACK OVER PREVENTION · SENSING SYSTEM | Honda (America Honda Motor Co) is recalling certain 2020-2024 Ridgeline vehicles. The rearview camera (RVC) tailgate wire harness may fatigue and break, which can prevent the rear… |
| AIR BAGS · SENSOR | Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 20… |
See all recalls for the 2021 Honda Ridgeline → · Source: NHTSA. Confirm by VIN before assuming a recall applies.
Find the exact part by VIN
Search 1.2M+ parts filtered to your exact 2021 Honda Ridgeline by VIN. Stop buying the wrong part.
Find parts by VIN →Decode your exact VIN
Get 100+ specs for your specific 2021 Honda Ridgeline — engine, trim, recalls, and a PDF. Instant decode for $1.99.
Decode my VIN →Frequently asked questions
How often should parts be replaced on a 2021 Honda Ridgeline?
Honda’s maintenance schedule for the 2021 Honda Ridgeline lists the engine air filter every 15,000 mi and cabin air filter every 15,000 mi. Parts not in that schedule, such as brake pads, are replaced when inspection shows wear.
What part numbers fit a 2021 Honda Ridgeline?
For the 3.5 L petrol, 6-cyl, 284 hp engine, TecDoc lists brake pads HELLA 8DB 355 040-461, brake rotors BREMBO 09.E232.11, oil filter K&N Filters SO-1010 and engine air filter K&N Filters 33-5041, among others; 6 of the 15 parts in the table have a catalogued number. Other engines of the same model year can need different parts.
What maintenance parts does a 2021 Honda Ridgeline need?
The recurring service and wear parts are brake pads and rotors, the engine oil, air and cabin filters, spark plugs, the 12V battery, wiper blades, headlight bulbs and the serpentine belt; the alternator, starter, radiator and water pump are replaced when they fail.
Where can I buy parts for a 2021 Honda Ridgeline?
Each row links to marketplace listings for that part on this 2021 Honda Ridgeline. Confirm fit before buying: a VIN lookup resolves the engine and trim that decide which part number is correct.