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Finding the Right Replacement Engine for Your Nissan Altima (2019–2024)

If you’re searching for a replacement engine for a Nissan Altima 2019–2024, you’re facing one of the most significant repair decisions a car owner can make. Whether your 2.5L KR20DDET four-cylinder has blown a head gasket, suffered severe oil consumption, or been damaged in an accident, getting the right engine from the right supplier can mean the difference between a reliable daily driver and a money pit. In this guide, we compare the top three sources for Altima replacement engines — Jasper Engines & Transmissions, LKQ (used/salvage engines), and AutoZone/Advance remanufactured engines via trusted rebuilders — so you can make a confident, informed decision.

What Engine Does the 2019–2024 Nissan Altima Use?

Before diving into brand comparisons, it helps to know what you’re replacing. The 2019–2024 Nissan Altima comes equipped with one of two engines:

• 2.5L 4-cylinder (KR20DDET) — Standard on most trims, producing around 182 hp
• 2.0L turbocharged 4-cylinder (MR20DD VC-Turbo) — Available on the SR VC-Turbo and Platinum trims, producing up to 248 hp

The 2.5L naturally aspirated engine is by far the most common and the one most replacement engine suppliers stock. The 2.0T VC-Turbo is relatively rare in the replacement market, so options are more limited.

Head-to-Head Comparison: Top Replacement Engine Brands

Detailed Breakdown: Each Replacement Engine Option

1. Jasper Engines & Transmissions — Best for Long-Term Peace of Mind

Jasper is widely regarded as the gold standard in remanufactured engines in the United States. Their remanufactured Nissan 2.5L engines are completely disassembled, cleaned, and rebuilt to OEM specifications using new or remanufactured components — including bearings, seals, gaskets, and timing components. Every engine is dyno-tested before shipping.

For 2019–2024 Altima owners, Jasper’s industry-leading 3-year/100,000-mile nationwide warranty is a major selling point. If your engine fails anywhere in the country, a Jasper-authorized shop will handle the repair at no cost. That’s remarkable coverage for a major mechanical component.

The downside? Jasper engines cost more upfront, and they typically require professional installation at a certified shop — you can’t just order one online and drop it in your driveway. But for someone who plans to keep their Altima for years, the value proposition is hard to beat.

➡ Check availability and pricing for a Jasper remanufactured engine for your Altima:
[AFFILIATE_LINK:jasper-nissan-altima-2019-engine]
[CTA_BUTTON:jasper-nissan-altima-2019-engine:Jasper Engines]

2. LKQ Used / Salvage Engines — Best for Budget-Conscious Buyers

LKQ Corporation is the largest provider of recycled OEM auto parts in North America, and they’re often the first stop for mechanics and DIYers looking for a used engine. Because the 2019–2024 Altima is a recent vehicle, LKQ frequently has low-mileage pulls from collision-damaged cars — sometimes engines with fewer than 40,000 miles on the clock.

The appeal here is obvious: significant cost savings. A used Altima 2.5L from LKQ can run $800–$1,800 depending on mileage and your location, versus $2,500 or more for a remanufactured unit. For someone with a tight budget or a vehicle with lower overall value, a quality used engine makes financial sense.

The risk? You’re buying a pre-owned engine with an unknown internal history. While LKQ provides basic warranty coverage (typically 30–90 days), that’s a far cry from what remanufactured suppliers offer. Always ask for the mileage documentation and request a visual inspection before purchase if possible.

➡ Search for low-mileage used Nissan Altima engines in your area:
[AFFILIATE_LINK:lkq-nissan-altima-2019-2024-engine]
[CTA_BUTTON:lkq-nissan-altima-2019-2024-engine:LKQ Auto Parts]

3. AutoZone / Advance Auto Parts Remanufactured Engines — Best Middle Ground

Major auto parts retailers like AutoZone and Advance Auto Parts carry remanufactured engines through partnerships with trusted rebuilding companies. These engines typically fall between LKQ (budget) and Jasper (premium) in both price and warranty coverage, often coming with a 1–3 year warranty depending on the brand and retailer.

The convenience factor is real — you can often order online, have the engine shipped to a local store, and pick it up within days. Some programs include free loaner tools and core charge handling, making the process smoother for DIY mechanics or independent shops.

For the 2019–2024 Nissan Altima’s 2.5L four-cylinder, availability through these channels has improved as more of these vehicles have reached the age where engine replacements become necessary. Always double-check that the engine code (KR20DDET) matches before ordering.

➡ Shop remanufactured Nissan Altima engines at AutoZone:
[AFFILIATE_LINK:autozone-nissan-altima-reman-engine]
[CTA_BUTTON:autozone-nissan-altima-reman-engine:AutoZone]

➡ Compare pricing at Advance Auto Parts:
[AFFILIATE_LINK:advance-auto-nissan-altima-engine]
[CTA_BUTTON:advance-auto-nissan-altima-engine:Advance Auto Parts]

Which Replacement Engine Should You Buy for Your Nissan Altima?

Here’s a straightforward recommendation based on your situation:

• Buy Jasper if: You plan to keep your Altima for 5+ more years, want the strongest warranty available, and are willing to invest upfront for long-term reliability. This is the smart play for higher-trim Altimas like the SR or Platinum.
• Buy LKQ used if: Your Altima’s overall value doesn’t justify a $3,000+ engine investment, or you’re a skilled mechanic who can carefully vet the engine before purchase. Ideal if you can source a confirmed low-mileage pull from a wreck.
• Buy a remanufactured engine via AutoZone/Advance if: You want a balance of cost, convenience, and warranty without the premium of Jasper. This is a solid choice for most everyday Altima owners who use a trusted local shop for installation.

One final tip: Regardless of which engine you choose, always replace the timing chain components, water pump, and all gaskets during the swap. Cutting corners on these items during installation often leads to callbacks and additional expense — it’s simply not worth it on a job this size.

Frequently Asked Questions

How much does it cost to replace the engine on a 2019–2024 Nissan Altima?

Total costs including parts and labor typically range from $2,500 to $6,000+ depending on whether you choose a used, remanufactured, or new engine. Labor alone can run $800–$1,500 at most shops.

What engine is in the 2019–2024 Nissan Altima?

Most 2019–2024 Altima models use the 2.5L 4-cylinder KR20DDET engine, producing approximately 182 hp. The VC-Turbo trims use a 2.0L turbocharged MR20DD engine rated at 248 hp.

Is it worth replacing the engine on a Nissan Altima?

If the rest of the vehicle is in good condition (body, transmission, suspension), a replacement engine is often more cost-effective than purchasing a newer vehicle. This is especially true for 2019–2024 models, which still have significant market and use value.

How long does a remanufactured Nissan Altima engine last?

A quality remanufactured engine from a reputable supplier like Jasper can last 150,000–200,000 miles with proper maintenance, including regular oil changes with the correct specification oil (typically 0W-20 full synthetic).

Can I install a replacement Nissan Altima engine myself?

Engine replacement is an advanced DIY job requiring an engine hoist, proper stands, and mechanical experience. While technically possible for skilled DIYers, most owners benefit from professional installation — particularly to preserve warranty coverage on remanufactured units.

Does the 2019–2024 Nissan Altima have known engine problems?

Some 2019–2021 Altima owners have reported excessive oil consumption with the 2.5L engine, which Nissan addressed in later production. This issue can accelerate internal wear if not monitored. Always check oil levels regularly and address consumption issues early.