--- product_id: 30042231 title: "Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs" brand: "bosch" price: "฿3" currency: THB in_stock: true reviews_count: 6 url: https://www.desertcart.co.th/products/30042231-bosch-py21w-581-pure-light-car-light-bulbs-12-v store_origin: TH region: Thailand --- # Long service life with premium materials 12V 21W power for optimal brightness BAU15s base for perfect vehicle fit Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs **Brand:** bosch **Price:** ฿3 **Availability:** ✅ In Stock ## Summary > 💡 Light up your drive with Bosch Pure Light – because your car deserves the best signal! ## Quick Answers - **What is this?** Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs by bosch - **How much does it cost?** ฿3 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/30042231-bosch-py21w-581-pure-light-car-light-bulbs-12-v) ## Best For - bosch enthusiasts ## Why This Product - Trusted bosch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **ECE Approved Safety:** Complies with strict European safety standards for peace of mind on every drive. - • **Durability That Lasts:** Crafted from high-quality components to deliver extended lifespan and reduce replacements. - • **Value-Packed Twin Set:** Two bulbs per pack offer excellent price-quality ratio, keeping your car signaling sharp and stylish. - • **Pure Light Performance:** Experience crisp, clear signaling with Bosch’s original equipment quality bulbs. - • **Universal Vehicle Compatibility:** Designed to fit a wide range of vehicles, ensuring seamless installation and reliable function. ## Overview Bosch PY21W (581) Pure Light car light bulbs deliver 12V and 21W power with a BAU15s base, engineered for front and rear signal lights. These ECE-approved bulbs combine original equipment quality with long-lasting durability, fitting a broad range of vehicles. Sold in a convenient twin pack, they offer an unbeatable price-quality balance for professional-grade automotive lighting. ## Description Bosch - car light bulbs Pure Light 1987301018ECE: PY21W - UK code: 581Voltage: 12 VPower: 21 WBase type: BAU15sThese bulbs are suitable for:Front signal lightRear signal lightPlease refer to your vehicle manual Review: Bosch = quality - Bosch products are quality Review: Conforme ## Features - Bulbs with Original Equipment Quality - Suitable for all types of vehicles with different needs - Long service life: thanks to the high quality materials and components used - Good price-quality ratio - ECE approved.Available in C5W, H6W, K10W (Sof. 10W), P21W, PY21W, P21/4W, P21/5W, R5W, R10W, T4W, W3W, W5W, WY5W, W16W, W21W, W21/5W, W1,2W.Quantity: 2 bulbs ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003JY8268 | | Auto Part Position | Rear | | Best Sellers Rank | #2,394,476 in Automotive ( See Top 100 in Automotive ) #2,392 in Automotive Turn Signal Bulbs #92,063 in Automotive Lighting Assemblies | | Brand Name | Bosch | | Color | Yellow | | Customer Reviews | 4.7 4.7 out of 5 stars (5,090) | | Fit Type | Vehicle Specific Fit | | Global Trade Identification Number | 03165141228854 | | Item Type Name | 4958662051 | | Item Weight | 9 Grams | | Light Source Type | Filament | | Manufacturer | Bosch | | Manufacturer Part Number | 1987301018 | | Model Number | 1 987 301 018 | | OEM Equivalent Part Number | AUDI%N10256401, MERCEDES-BENZ%A0015449194, RENAULT%7703097178, SEAT%N10256401, SKODA%N10256401 | | Package Quantity | 1 | | Specific Uses For Product | Indicator Light | | UPC | 780873641561 | | Unit Count | 2.0 Count | | Voltage | 12 Volts | | Wattage | 21 watts | ## Product Details - **Brand:** Bosch - **Item Package Quantity:** 1 - **Light Source Type:** Filament - **Specific Uses For Product:** Indicator Light - **Wattage:** 21 watts ## Images ![Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs - Image 1](https://m.media-amazon.com/images/I/61oF+4w+UFL.jpg) ![Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs - Image 2](https://m.media-amazon.com/images/I/61n+B81CaqL.jpg) ![Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs - Image 3](https://m.media-amazon.com/images/I/31wnvoOTgzL.jpg) ![Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs - Image 4](https://m.media-amazon.com/images/I/41fhnVCUXJL.jpg) ![Bosch PY21W (581) Pure Light car light bulbs - 12 V 21 W BAU15s - 2 bulbs - Image 5](https://m.media-amazon.com/images/I/41g9gRDC+KL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Bosch = quality *by B***D on March 8, 2026* Bosch products are quality ### ⭐⭐⭐⭐⭐ Review *by E***M on March 12, 2026* Conforme ### ⭐⭐⭐⭐⭐ Review *by I***Z on January 18, 2026* Bombillas de intermitente estándar, pero de buena calidad. Alumbran perfectamente. ## Frequently Bought Together - Bosch PY21W (581) Pure Light Car Light Bulbs - 12 V 21 W BAU15s - 2 Bulbs - Bosch P21W (382) Pure Light Car Light Bulbs - 12 V 21 W BA15s - 2 Bulbs - Bosch H7 (477) Pure Light Headlight Bulbs - 12 V 55 W PX26d - 2 Bulbs --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/30042231-bosch-py21w-581-pure-light-car-light-bulbs-12-v](https://www.desertcart.co.th/products/30042231-bosch-py21w-581-pure-light-car-light-bulbs-12-v) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-24*