Best Electrical Parts for Nissan Altima (2019-2024): Complete Buyer’s Guide

DTP Parts is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you.

Affiliate Disclosure: dtpparts.com is a participant in affiliate advertising programs. We may earn a commission when you purchase through links on this page, at no additional cost to you.

Best Electrical Parts for Nissan Altima (2019-2024): Everything You Need to Know

If you own a 2019-2024 Nissan Altima, keeping the electrical system in top shape is one of the most important things you can do to protect your investment. From the battery that gets you started every morning to the alternator that keeps everything charged on the road, electrical parts for Nissan Altima models need to meet OEM standards or better. This guide breaks down the top picks across the most critical electrical components, so you can shop smart, avoid costly mistakes, and keep your Altima running like it just rolled off the lot.

Quick Comparison Table: Top Electrical Parts for 2019-2024 Nissan Altima

Top Picks: Best Electrical Parts for the 2019-2024 Nissan Altima

1. Battery — Optima RedTop / ACDelco Advantage

The battery is the heartbeat of your Altima’s electrical system. The 2019-2024 Nissan Altima uses a Group 35 battery and demands strong cold-cranking amps (CCA), especially in colder climates. Two brands consistently rise to the top: Optima RedTop for performance-oriented drivers and ACDelco Advantage for budget-conscious owners who still want solid reliability.

Check Price on the Optima RedTop Battery for Nissan Altima

[CTA_BUTTON:nissan-altima-optima-battery:View Optima RedTop Battery]

• Pros: High CCA rating, vibration-resistant design, 3-year free replacement warranty, excellent hot/cold performance
• Cons: Optima premium models are pricier than budget alternatives; ACDelco may have shorter warranty windows

Best for: Anyone wanting a set-it-and-forget-it battery that handles the Altima’s start-stop technology and electrical demands without issue.

2. Alternator — Bosch AL8782X / Denso Remanufactured

A failing alternator is one of the most common causes of battery drain and dashboard warning lights on the Altima. The 2019-2024 models use a 150-amp alternator, and both Bosch and Denso offer excellent OEM-equivalent replacements. Denso is actually an OEM supplier to Nissan, making their remanufactured units a particularly compelling buy.

Shop the Denso Remanufactured Alternator for 2019-2024 Altima

[CTA_BUTTON:nissan-altima-denso-alternator:Shop Denso Alternator]

• Pros: OEM-level output, includes new internal components, fits all 2019-2024 Altima trims with 2.0L and 2.5L engines
• Cons: Remanufactured units carry a core charge; Bosch units can be harder to source locally

3. Starter Motor — DB Electrical / Bosch SR4183X

Slow cranks, click-click-click noises, or a complete no-start condition? Your starter motor may be on its way out. DB Electrical offers one of the best value-to-quality ratios in the aftermarket space, while Bosch brings German engineering reliability to a direct-fit replacement.

Find the Right Starter Motor for Your 2019-2024 Altima

[CTA_BUTTON:nissan-altima-db-electrical-starter:Shop Starter Motors]

• Pros: Direct-fit design, affordable price point, available for both 2.0L VC-Turbo and 2.5L engines
• Cons: Some budget brands may not include a warranty; always verify fitment by VIN

4. Crankshaft Position Sensor — Delphi SS11411 / Standard Motor PC714

The crankshaft position sensor is a small but mighty component. When it fails on a 2019-2024 Altima, you’ll typically see check engine light codes P0335 or P0336, experience stalling, or have difficulty starting. Delphi and Standard Motor Products are two of the most trusted names for this sensor, offering direct OEM-spec replacements.

Order the Crankshaft Position Sensor for Your Altima

[CTA_BUTTON:nissan-altima-crank-position-sensor:Get Crankshaft Sensor]

• Pros: Plug-and-play fitment, clears CEL codes reliably, affordable fix under $60
• Cons: Access can be awkward depending on engine variant; verify sensor location for 2.0L vs. 2.5L

5. Ignition Coil — Denso 673-1308 / NGK U5157

Misfires, rough idle, and poor fuel economy on your Altima often trace back to a failed ignition coil. The 2019-2024 Altima uses coil-on-plug (COP) ignition, meaning each cylinder has its own coil. Denso and NGK are the gold standard here — both are OEM suppliers and offer plug-and-play replacements that restore smooth engine performance immediately.

Shop Denso Ignition Coils for 2019-2024 Nissan Altima

[CTA_BUTTON:nissan-altima-ignition-coil-denso:Shop Ignition Coils]

• Pros: True OEM-equivalent performance, eliminates misfires fast, affordable per-coil pricing
• Cons: Recommended to replace all coils at once for peace of mind, which increases total cost

Buying Guide: What to Look for in Nissan Altima Electrical Parts

OEM vs. Aftermarket: Which Should You Choose?

For most electrical components, OEM-equivalent aftermarket parts from reputable brands like Denso, Bosch, Delphi, and NGK offer the best balance of cost and quality. These companies supply parts directly to Nissan, so you’re often getting the same quality at a lower price. Avoid no-name brands on electrical components — a cheap alternator or faulty sensor can cause cascading electrical damage.

Key Factors to Consider

• Engine Fitment: The 2019-2024 Altima comes in two engine variants — the 2.0L VC-Turbo and the 2.5L naturally aspirated. Always confirm the part fits your specific engine code before ordering.
• Warranty Coverage: Look for at least a 12-month or 12,000-mile warranty on major components like alternators and starters. Batteries should offer a 24-36 month free replacement period.
• Remanufactured vs. New: Remanufactured alternators and starters from quality brands (Denso, Bosch) are perfectly reliable and often 30–50% cheaper than new units.
• Core Charges: Many alternators and starters carry a core charge ($20–$50) that’s refunded when you return your old part. Factor this into your budget.
• Check Engine Codes First: Before replacing any sensor, confirm the diagnosis with an OBD-II scanner. This prevents unnecessary parts swaps and saves money.

Brief Install Overview: Can You DIY These Parts?

Here’s a quick skill-level breakdown for the most common Altima electrical repairs:

• Battery Replacement: ✅ Easy — 15 minutes, basic hand tools, beginner-friendly. Keep memory saver connected to preserve radio presets.
• Ignition Coil: ✅ Easy — Remove engine cover, unplug connector, swap coil. 30 minutes per coil.
• Crankshaft Position Sensor: ⚠️ Moderate — Requires locating the sensor (varies by engine), some models need intake removal for access.
• Alternator: ⚠️ Moderate to Hard — Involves removing serpentine belt, multiple bolts, and electrical connectors. Allow 2–3 hours.
• Starter Motor: ⚠️ Moderate — Located under the intake manifold on most Altima configurations; tighter access requires patience and the right tools.

Pro Tip: Always disconnect the negative battery terminal before working on any electrical component. For alternators and starters, use a service manual or reputable YouTube walkthrough specific to the 2019-2024 Altima to avoid connector damage.

Frequently Asked Questions (FAQ)

What battery size does the 2019-2024 Nissan Altima use?

The 2019-2024 Nissan Altima uses a Group 35 battery. Look for a minimum of 550 CCA for reliable cold-weather starting. Top choices include the Optima RedTop and ACDelco Advantage Group 35.

How do I know if my Altima’s alternator is failing?

Common signs include a battery warning light on the dashboard, dimming headlights, frequent battery drain, and a whining or grinding noise from the engine bay. Confirm with a multimeter — a healthy alternator outputs 13.5–14.7 volts at idle.

What causes a check engine light on the 2019-2024 Nissan Altima?

Electrical-related causes include a failing crankshaft or camshaft position sensor (P0335, P0340), faulty oxygen sensor (P0131–P0161), bad ignition coil (P0300–P0304), or a weak battery triggering voltage-related codes. Use an OBD-II scanner to pinpoint the issue before purchasing parts.

Can I replace ignition coils myself on the Altima?

Yes! Ignition coil replacement on the 2019-2024 Altima is a straightforward DIY job. Remove the plastic engine cover, disconnect the coil connector, remove the retaining bolt, and swap the coil. Always replace spark plugs at the same time for best results.

Are remanufactured alternators reliable for the Nissan Altima?

Yes — when purchased from reputable brands like Denso, Bosch, or Remy, remanufactured alternators are thoroughly tested and come with warranties comparable to new units. They’re a smart choice that saves $80–$150 over new OEM pricing.

How long do Nissan Altima batteries typically last?

Under normal conditions, the factory battery in a 2019-2024 Altima lasts approximately 3–5 years. Extreme heat, frequent short trips, and heavy accessory use can shorten battery life. Testing your battery annually after the 3-year mark is a good preventive habit.

Final Verdict: Keeping Your 2019-2024 Nissan Altima Electrically Sound

The electrical system is the nervous system of your Nissan Altima — when one component fails, it can affect everything from fuel economy to safety systems. The good news is that quality electrical parts for the Nissan Altima are widely available, reasonably priced, and in many cases DIY-friendly.

Our top recommendations come down to this: stick with OEM-supplier brands like Denso, Bosch, NGK, and Delphi for sensors, coils, and charging system components. For batteries, Optima RedTop offers industry-leading durability. Always confirm fitment by year, trim, and engine variant before ordering — the 2.0L and 2.5L Altima engines can have different part numbers even when they look identical.

Whether you’re chasing a check engine light or doing preventive maintenance before winter, investing in the right electrical parts today saves you from an unexpected roadside breakdown tomorrow.

Browse All Electrical Parts for 2019-2024 Nissan Altima

[CTA_BUTTON:nissan-altima-electrical-parts-all:Shop All Altima Electrical Parts]