Yuasa 40B19L(S)/36B20L(S) Import Specialty 12-Volt Battery - YUAM22S4L

The Yuasa 40B19L(S)/36B20L(S) Import Specialty 12-Volt Battery (YUAM22S4L) is a purpose-built replacement battery engineered to meet the demanding fitment requirements of import-market vehicles that use the 40B19L(S) or 36B20L(S) battery designation. Yuasa Battery is one of the most respected names in 12-volt battery manufacturing, trusted by OEM suppliers and enthusiasts alike for reliable starting power and long-term durability. If your vehicle calls for a JDM-spec or import-market battery size, the YUAM22S4L is the direct replacement to source.

Key Features & Benefits

• Import-Specific Fitment: Designed specifically to replace 40B19L(S) and 36B20L(S) battery designations — sizes commonly found in Japanese domestic market (JDM) and grey-market import vehicles that don't use standard North American battery group sizes. This means no adapters, no guesswork, and a proper factory-fit installation.
• Yuasa Brand Reliability: Yuasa is a globally recognized battery manufacturer with decades of experience supplying OEM-quality 12-volt batteries for automotive, motorcycle, and powersports applications. Choosing a Yuasa battery means you're getting a product built to exacting quality standards.
• 12-Volt System Compatibility: Operates on the standard 12-volt electrical system found in the vast majority of import passenger cars, ensuring full compatibility with your vehicle's charging system, electronics, and starter motor.
• Direct Drop-In Replacement: The YUAM22S4L is built to the physical and electrical specs of the B19L/B20L battery footprint, so installation is straightforward for anyone comfortable with basic battery swaps — no modifications required.
• Compact Import Battery Dimensions: The B-series battery case is physically smaller than many North American group sizes, making it the correct choice for engine bays designed around JDM packaging constraints. Using the wrong group size in these applications can result in fitment issues or improper terminal positioning.

Specifications

• Brand: Yuasa Battery
• Part Number (MPN): YUAM22S4L
• SKU: YSAYUAM22S4L
• UPC: 048493220413
• Voltage: 12-Volt
• Battery Type: Import Specialty
• Replaces: 40B19L(S) and 36B20L(S) battery designations
• Dimensions (approx.): 8.00" W × 5.30" H × 9.50" D (as listed on product page)

Fitment

The Yuasa YUAM22S4L is designed for vehicles that require a 40B19L(S) or 36B20L(S) import-specification battery. This battery designation is primarily associated with Japanese domestic market (JDM) vehicles and certain grey-market or Canadian-spec imports where the OEM battery follows Japanese Industrial Standard (JIS) sizing conventions rather than BCI group sizes used in standard North American vehicles.

If your vehicle's owner's manual or existing battery label reads 40B19L, 40B19LS, 36B20L, or 36B20LS, the YUAM22S4L is your correct replacement. We strongly recommend verifying your current battery's designation before ordering. Not sure if this battery fits your car? Contact our fitment specialists — we're happy to help you confirm compatibility before you buy.

Note: This battery is NOT a universal fit for all import vehicles. North American-spec versions of Japanese models (e.g., standard US-market Honda Civics, Toyota Corollas) typically use BCI group sizes and will not use this designation. This part is specific to vehicles with JIS B-series battery requirements.

What's in the Box

• 1x Yuasa 40B19L(S)/36B20L(S) Import Specialty 12-Volt Battery (YUAM22S4L)

Why Buy from ThreePiece.us

• Free Shipping on Every Order: Every purchase ships free — no minimums, no surprises at checkout.
• Affirm Financing Available: Break your purchase into manageable payments with Affirm financing, so you can get the parts you need today without waiting.
• Expert Fitment Support: Our team has served 10,000+ customers and is available to help you verify that this battery is the right fit for your specific vehicle. Reach us by phone at 813-535-5801 or by email at [email protected] before you order if you have any fitment questions.
• In-Stock Availability: The YUAM22S4L is currently in stock and ready to ship — no extended waits for this specialty import battery.
• Price Match Guarantee: ThreePiece.us offers a price match guarantee on all products, so you know you're getting a competitive deal.

Frequently Asked Questions

Q: What vehicles does the Yuasa YUAM22S4L fit?
A: The YUAM22S4L is designed for vehicles that require a 40B19L(S) or 36B20L(S) battery designation. These are Japanese Industrial Standard (JIS) battery sizes used in JDM and certain import-market vehicles. Check your existing battery's label or your owner's manual for the battery designation. If it shows 40B19L, 40B19LS, 36B20L, or 36B20LS, this is your battery. If you're uncertain, contact our fitment team and we'll help confirm.

Q: Is this the same as a standard North American group size battery?
A: No. The B19L/B20L designation follows the Japanese Industrial Standard (JIS) system, not the BCI group size system used in most North American vehicles. The physical case dimensions (approximately 8.00" W × 5.30" H × 9.50" D) and terminal placement are specific to import-market vehicles. Using a BCI group-size battery in a vehicle designed for a JIS B-series battery can result in improper fitment or incorrect terminal orientation.

Q: Is this battery in stock and ready to ship?
A: Yes — as of this listing, the Yuasa YUAM22S4L is in stock at ThreePiece.us and ships free on every order. You do not need to wait for a special order on this item.

Q: Can I finance this purchase?
A: Yes. ThreePiece.us offers financing through Affirm, allowing you to split the cost into installments. Simply select Affirm at checkout to see your options.