What Is the Part Number of the Air Filter on a 2021 Hyundai Elantra?

The correct engine air filter part number for most 2021 Hyundai Elantra models equipped with the 2.0L gasoline engine is typically Hyundai OEM part 28113-L0000 (sometimes written as 28113L0000), while cabin air filters are usually 97133-F2000 or equivalent; however, the exact part number can vary by engine type, trim, and market, so owners should confirm via VIN with a Hyundai dealer or official parts catalog.

Understanding Which Air Filter You Mean

The 2021 Hyundai Elantra uses two different types of filters commonly referred to as “air filters”: the engine air filter and the cabin (or HVAC) air filter. The engine air filter protects the engine by filtering intake air, while the cabin air filter cleans the air entering the passenger compartment through the HVAC system. Each has its own distinct OEM part number and several cross-compatible aftermarket equivalents.

Engine Air Filter: Typical OEM Part Number

For a standard 2021 Hyundai Elantra sold in North America with the 2.0L four‑cylinder gasoline engine (the most common configuration), the factory engine air filter is generally cataloged under this Hyundai OEM number:

The list below outlines the most commonly referenced genuine Hyundai engine air filter part numbers for the 2021 Elantra, depending on engine and market. It is meant as a guide, not a substitute for VIN-based confirmation.

• 28113-L0000 – Widely listed for 2021 Elantra with the 2.0L MPI gasoline engine (e.g., SE, SEL, Value-type trims in many markets).
• 28113-AA000 / 28113-A9100 / similar supersessions – Sometimes appear in catalogs as superseded or regional variants; exact applicability depends on country and production date.
• N/L (N Line / turbo variants) – Turbocharged 1.6L or performance versions may use a different air box and corresponding part number, which must be verified by VIN.

These listings reflect commonly cited parts in dealer and independent catalogs as of late 2024, but Hyundai sometimes revises or supersedes part numbers, and regional models may not match North American catalogs exactly, so validation against your vehicle’s VIN is essential.

Cabin Air Filter: Typical OEM Part Number

Alongside the engine filter, the cabin air filter ensures cleaner air inside the vehicle. For many 2021 Hyundai Elantra models, the cabin filter is commonly cataloged under the following OEM number:

The next list summarizes the primary Hyundai part numbers frequently used for the 2021 Elantra’s cabin filtration, along with notes on applicability and common variants.

• 97133-F2000 – Often listed as the standard Hyundai cabin air filter for 2021 Elantra models using the shared Hyundai/Kia HVAC module.
• 97133-F2100 / 97133-FXXXX variants – Possible regional or superseded numbers; some markets receive charcoal-impregnated (odor-control) versions under slightly different codes.
• Aftermarket equivalents – Brands like Mann, Mahle, and Fram offer compatible filters cross-referenced from 97133-F2000; packaging normally lists “2021 Hyundai Elantra” compatibility.

Because HVAC configurations and emissions rules can differ from one market to another, cabin filter part numbers can shift modestly, so the OEM code on your existing filter or an official VIN lookup remains the most reliable reference.

Why the Exact Part Number Can Vary

Although 28113-L0000 and 97133-F2000 are widely accepted as the “go-to” OEM part numbers for the 2021 Elantra’s engine and cabin filters, several factors can change which part you actually need. These include engine type, trim level, production date, and the country or region where the vehicle is sold. Hyundai also periodically updates or supersedes part numbers, which can cause confusion when cross-checking online catalogs and packaging labels.

Key Factors That Affect the Correct Air Filter Part

The following list explains the main reasons why two owners of 2021 Elantras might see different part numbers for filters that look very similar or even identical at a glance.

• Engine type and induction: A 2.0L naturally aspirated engine generally uses a different air box and filter than a 1.6L turbocharged engine or performance N/N Line variant.
• Trim and regional packages: Fleet models, eco-focused trims, or export versions may ship with different intakes or HVAC hardware, each tied to a different part code.
• Production date: Mid-cycle changes in supplier or design can result in superseded part numbers, even within the same model year.
• Regulatory differences: Markets with stricter emissions or air quality requirements may use special filters (e.g., higher dust load or charcoal filters) with distinct numbers.
• Supersessions and catalog updates: Hyundai may retire one code and replace it with another, while both appear in parts databases during the transition.

These variables explain why generic online listings can conflict and why a seemingly “correct” part may not fit perfectly, underscoring the importance of verifying the filter against your specific vehicle data.

How to Confirm the Correct Air Filter Part Number

To avoid buying the wrong filter, owners should use their vehicle’s unique information—especially the VIN—to confirm the exact part number before ordering. Several reliable sources provide this verification, and taking a few minutes to check can prevent wasted money and installation headaches.

Steps Owners Can Take

The following steps outline practical ways to confirm the right engine and cabin air filter part numbers for a 2021 Hyundai Elantra, using both official and hands-on methods.

1. Use the VIN with a Hyundai dealer: Call or visit a Hyundai dealership parts counter, provide your full 17‑digit VIN, and ask them to confirm the engine air filter and cabin air filter part numbers for your car.
2. Check Hyundai’s official parts catalog: Many regions provide an online OEM parts portal where you can enter your VIN and see the exact part numbers associated with your specific vehicle.
3. Inspect the existing filters: Remove the current engine and cabin filters and look for Hyundai part numbers printed or stamped on the frame; note any supersession labels or barcodes.
4. Compare dimensions and shape: If using aftermarket parts, verify length, width, and thickness against the original filter, paying attention to locating tabs and sealing edges.
5. Cross-reference with reputable brands: When using non-OEM filters, consult official cross-reference tables from major manufacturers rather than relying solely on marketplace listings.

By combining a VIN-based check with a visual and dimensional comparison of the old filter, owners can greatly reduce the risk of ordering an incompatible part, whether OEM or aftermarket.

Distinguishing Engine Air Filter from Cabin Air Filter

Because both filters are sometimes casually called “air filters,” confusion arises when searching for parts online. In the context of the 2021 Hyundai Elantra, it is especially important to specify whether you are looking for the engine air filter or the cabin (HVAC) filter to obtain the correct part number and ensure proper fitment.

Location and Function

The list below clarifies how the engine air filter and cabin air filter differ in terms of location, maintenance, and impact on the vehicle’s operation.

• Engine air filter: Located in a plastic air box in the engine bay; it filters the air before it enters the engine’s intake manifold, affecting performance, fuel economy, and engine longevity.
• Cabin air filter: Positioned behind or near the glovebox inside the cabin; it filters air used by the HVAC system, impacting cabin air quality, odor control, and HVAC efficiency.
• Service intervals: Engine filters are typically replaced around every 15,000–30,000 miles (or as specified in the owner’s manual), while cabin filters often see change intervals of 12,000–15,000 miles or annually, depending on conditions.
• Symptoms when dirty: A clogged engine air filter can cause reduced power and poorer fuel economy; a dirty cabin filter can lead to weak airflow, fogging issues, and musty smells inside the cabin.

Separating these two components in your mind—and when talking to parts suppliers—helps avoid ordering the wrong filter and ensures each system gets the correct maintenance at the right interval.

Summary

For most 2021 Hyundai Elantra models with the common 2.0L gasoline engine, the factory engine air filter is generally identified as Hyundai part 28113-L0000, while the cabin air filter is most often listed as 97133-F2000 or a closely related variant. However, engine type, trim, production date, and regional differences can all change the exact part number, and Hyundai periodically supersedes parts over time. The most reliable way to confirm the correct filter for your specific 2021 Elantra is to use the full VIN in an official Hyundai parts catalog or through a dealership, and then verify against the filter currently installed in your car.