The YTX14-BS battery measures 6.0 x 3.44 x 5.75 inches (150 x 87 x 145 mm), making it a compact AGM starting battery for powersports use.
For the full breakdown, see our best YTX14-BS Battery guide.
If you’re replacing a dead battery in a motorcycle, ATV, or snowmobile, confirming the fit is step one — getting it wrong means return shipping and more downtime. The YTX14-BS battery dimensions — 6.0 x 3.44 x 5.75 inches (150 x 87 x 145 mm) — are consistent across manufacturers, but rounding differences between retailers create confusing variations on product pages. This article covers the official Yuasa measurements, what those numbers mean during installation, the most common cross-references, and how to avoid buying a battery that won’t fit your tray. Knowing the exact size before you order saves time and keeps your vehicle running.
Official YTX14-BS Dimensions
Yuasa, the original manufacturer, specifies the YTX14-BS at 150 mm x 87 mm x 145 mm — that’s length, width, and height respectively. In US units, that’s about 6.0 x 3.44 x 5.75 inches. Some retailers list 5.91 x 3.43 x 5.75 or 152 x 88 x 147 mm — those are rounding differences and measurement conventions, not actual size variation. The battery is 12V with a 12 Ah rating (at the 10-hour discharge rate), delivers 200 cold cranking amps, and weighs roughly 10.1 lbs (4.6 kg). It uses AGM (absorbent glass mat) construction, making it sealed and maintenance-free — no water refills or periodic checks needed. Terminal orientation places the positive post on the left and negative on the right (Terminal Type 5). The table below summarizes the key specifications.
| Specification | Value |
|---|---|
| Length | 150 mm / 6.0 in |
| Width | 87 mm / 3.44 in |
| Height | 145 mm / 5.75 in |
| Voltage | 12V |
| Capacity | 12 Ah (10‑hour rate) |
| Cold Cranking Amps | 200 CCA |
| Weight | 10.1 lbs / 4.6 kg |
| Chemistry | AGM / Sealed Lead‑Acid |
| Terminal Polarity | Positive Left, Negative Right |
| Terminal Type | Type 5 |
What Do These Measurements Mean For Your Setup?
Because the YTX14-BS uses AGM technology, it is sealed and non-spillable, which simplifies installation and allows flexible mounting in most powersports vehicles. The 145 mm (5.75 in.) height typically includes the terminals in standard measurements, so confirm your compartment’s depth — not just length and width — before ordering.
A frequent swap error is confusing this battery with the taller YTX14AH-BS class. The AH suffix means the case is about 17 mm taller (162 mm vs. 145 mm), so it will not fit trays designed for the standard YTX14-BS. Measure your original battery’s height; if it stands roughly 6 inches tall, the YTX14-BS is the correct size.
Also verify that your charger supports AGM chemistry. AGM batteries require a different charging profile than traditional flooded lead-acid types, per Yuasa’s official specifications. Using the wrong profile can shorten battery life. The 200 CCA rating covers most motorcycles, ATVs, scooters, UTVs, jet skis, and snowmobiles that call for this size class. Always confirm that your hold-down bracket aligns with the YTX14-BS case dimensions before final installation, and check that the positive post sits on the left when facing the battery — terminal reversal is a common fit surprise.
Before final installation, test-fit the battery in the tray without tightening the hold-down. Confirm that the terminals align with your cable connectors and that the positive cable reaches the left-side post without stretching. A battery that measures correctly on paper can still have cable-routing issues in a tight compartment.
Common Cross-Reference Options