--- title: "py21w bulb — Niche Verdict: Skip it (45/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/py21w-bulb" last_updated: "2026-07-09T21:47:06.723Z" locale: en meta: description: "a small market ($57K/yr) — py21w bulb doesn't clear our bar today." "og:description": "a small market ($57K/yr) — py21w bulb doesn't clear our bar today." "og:title": "py21w bulb — Niche Verdict: Skip it (45/100) | Amazon United States - Flapen" --- Back to Flapen home # **py21w bulb** **Skip it****45/100 ** a small market ($57K/yr) — py21w bulb doesn't clear our bar today. **Market/yr** **$57K** **Growth (1y)** **+194.6%** **Products** **28** **Brands** **20** was 19 a year ago **Sellers** **51** **Price range** **$7.13–$52.53** **Returns** **5.6%** **Rating** **4.4★** **Skip it** Scored 45/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **3** ×0.30 Growth **76** ×0.30 Competition **54** ×0.20 Quality gap **48** ×0.10 Returns **54** ×0.10 ## **Demand** Weekly Amazon search volume, last 31 weeks — +194.6% year over year. 1K638.5Spike '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26 ## **Competition** - SYLVANIA14% - ALKOREY13% - AUXITO12% - AUXLIGHT12% - BlyilyB10% - OXILAM7% - Other (14 brands)31% The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them. 20 brands and 51 sellers compete here. **Brands** **20 **▲rising was 19 a year ago **Sellers** **51** **Top 5 brand share** **62%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![SYLVANIA - 7507 Long Life Miniature - Bulb Ideal for Turn Signal Applications (Contains 2 Bulbs)](https://m.media-amazon.com/images/I/41QMJCRxYzL.jpg) [**SYLVANIA - 7507 Long Life Miniature - Bulb Ideal for Turn Signal Applications (Contains 2 Bulbs)**](https://www.amazon.com/dp/B01LX8ZU3L) SYLVANIA$8.174.5★33514%▲rising 2 ![AUXLIGHT 7507 1156(150) BAU15S LED Bulbs Extremely Bright PY21W 12496 7507AST 2641A Replacement for Turn Signal Lights 2200K Amber Yellow (Pack of 2)](https://m.media-amazon.com/images/I/41Hne5sYcUL.jpg) [**AUXLIGHT 7507 1156(150) BAU15S LED Bulbs Extremely Bright PY21W 12496 7507AST 2641A Replacement for Turn Signal Lights 2200K Amber Yellow (Pack of 2)**](https://www.amazon.com/dp/B0BBZV7V5K) AUXLIGHT$19.444.5★40712%▼falling 3 ![AUXITO CANBUS 7507 BAU15S LED Bulbs Amber Yellow with Built-in Resistor PY21W 12496 2641A 1156(150) Anti Hyper Flash Error Free Front Rear Turn Signal Lights and Blinker Parking Lights Pack of 2](https://m.media-amazon.com/images/I/51V1HnG937L.jpg) [**AUXITO CANBUS 7507 BAU15S LED Bulbs Amber Yellow with Built-in Resistor PY21W 12496 2641A 1156(150) Anti Hyper Flash Error Free Front Rear Turn Signal Lights and Blinker Parking Lights Pack of 2**](https://www.amazon.com/dp/B0GS54YR8S) AUXITO$36.144.5★35,93310%▲rising 4 ![ALKOREY-1156 S25 PY21W Miniature Bulb 2100K Amber Light 12V 21W Ba15s Replacement for Turn Signal Lights Back-Up/Reverse Lights 2 Pack](https://m.media-amazon.com/images/I/41UrV4kVRvL.jpg) [**ALKOREY-1156 S25 PY21W Miniature Bulb 2100K Amber Light 12V 21W Ba15s Replacement for Turn Signal Lights Back-Up/Reverse Lights 2 Pack**](https://www.amazon.com/dp/B0DZCQTQ9N) ALKOREY$7.164.1★619%▲rising 5 ![BlyilyB 2-Pack 9-30V BAU15S PY21W 7507 High Brightness Low Power Amber Yellow LED Bulbs Replacement For Turn Signal Lights](https://m.media-amazon.com/images/I/41IAu0b9SpL.jpg) [**BlyilyB 2-Pack 9-30V BAU15S PY21W 7507 High Brightness Low Power Amber Yellow LED Bulbs Replacement For Turn Signal Lights**](https://www.amazon.com/dp/B0837SZZRW) BlyilyB$9.654.4★3198%▲rising 6 ![OXILAM 7507 PY21W BAU15S LED Bulbs Amber Yellow 2800LM for Turn Signal Lights with Build-in Load Resistor CANBUS Error Free 2641A 12496 7507AST Bulb Replacement (2PCS)](https://m.media-amazon.com/images/I/51orL07DDEL.jpg) [**OXILAM 7507 PY21W BAU15S LED Bulbs Amber Yellow 2800LM for Turn Signal Lights with Build-in Load Resistor CANBUS Error Free 2641A 12496 7507AST Bulb Replacement (2PCS)**](https://www.amazon.com/dp/B07RMX2XK6) OXILAM$21.284.3★13,7637%▼falling 7 ![LASFIT T3 7507 LED Bulb Amber PY21W BAU15S Canbus Ready Turn Signal Lights Built In Resistor 2641A 12496 For 2012-2021 VW Tiguan Front And 2018-2022 Honda Accord Rear Automotive Plug and Play(2pcs)](https://m.media-amazon.com/images/I/41WdIHOgynL.jpg) [**LASFIT T3 7507 LED Bulb Amber PY21W BAU15S Canbus Ready Turn Signal Lights Built In Resistor 2641A 12496 For 2012-2021 VW Tiguan Front And 2018-2022 Honda Accord Rear Automotive Plug and Play(2pcs)**](https://www.amazon.com/dp/B0CYKSWPBL) LASFIT$52.534.5★1,5895%▼falling 8 ![ALKOREY-1157 Py21/5w Amber Light Miniature Bulb Mini Bulb 2100K Taillight Turn Signal Light 12V 21/5W Bay15d 2 Pack](https://m.media-amazon.com/images/I/41RZkRff9-L.jpg) [**ALKOREY-1157 Py21/5w Amber Light Miniature Bulb Mini Bulb 2100K Taillight Turn Signal Light 12V 21/5W Bay15d 2 Pack**](https://www.amazon.com/dp/B0DZFGHGQ6) ALKOREY$7.164.5★3494%▲rising 9 ![Philips 12496 LongerLife Miniature Bulb 2 Pack](https://m.media-amazon.com/images/I/31xrfF2n+YL.jpg) [**Philips 12496 LongerLife Miniature Bulb 2 Pack**](https://www.amazon.com/dp/B0173MK7ZA) PHILIPS$7.444.5★9323%▼falling 10 ![Auxbeam 2026 B2 Series BAU15S LED Bulb Amber Soft Light Long Life 400% Brighter 7507 PY21W Bulbs for Turn Signal Blinker DRL Parking Lights (Need Resistors for Brake or Turn Signal Light Use)](https://m.media-amazon.com/images/I/51WiPyg2ssL.jpg) [**Auxbeam 2026 B2 Series BAU15S LED Bulb Amber Soft Light Long Life 400% Brighter 7507 PY21W Bulbs for Turn Signal Blinker DRL Parking Lights (Need Resistors for Brake or Turn Signal Light Use)**](https://www.amazon.com/dp/B0GQZ1KCHL) Auxbeam$16.834.6★8213%▲rising 11 ![YYTQP 10 PCS Car PY21W S25 12V21W BAU15S Light Bulb Brake Light Bulb Turn Signal Light Bulb Replacement Miniature Bulb Mini Bulb Taillight Replacement for Cars Trucks SUVs and Motorcycles (Amber)](https://m.media-amazon.com/images/I/41xNBzqcFIL.jpg) [**YYTQP 10 PCS Car PY21W S25 12V21W BAU15S Light Bulb Brake Light Bulb Turn Signal Light Bulb Replacement Miniature Bulb Mini Bulb Taillight Replacement for Cars Trucks SUVs and Motorcycles (Amber)**](https://www.amazon.com/dp/B0DRT438QW) YYTQP$8.364.0★382%▲rising 12 ![Hella 7507TB Bulb 7507 12V 21W Bau15S S8 Namber (2)](https://m.media-amazon.com/images/I/410aQ19t0dL.jpg) [**Hella 7507TB Bulb 7507 12V 21W Bau15S S8 Namber (2)**](https://www.amazon.com/dp/B079SSTK19) Hella$7.134.6★4212%▲rising 13 ![PHINLION BAU15S PY21W 7507 Amber Yellow LED Turn Signal Light Bulbs Super Bright 3014 72-SMD 2641A Blinker Directional Lights Pack of 2](https://m.media-amazon.com/images/I/51vtLWFZ91L.jpg) [**PHINLION BAU15S PY21W 7507 Amber Yellow LED Turn Signal Light Bulbs Super Bright 3014 72-SMD 2641A Blinker Directional Lights Pack of 2**](https://www.amazon.com/dp/B07XPSNWD3) PHINLION$16.904.5★882%▼falling 14 ![Osram Original Bulbs PY21W 7507-02B 12V 21W (Pair)](https://m.media-amazon.com/images/I/412nwMdNsIL.jpg) [**Osram Original Bulbs PY21W 7507-02B 12V 21W (Pair)**](https://www.amazon.com/dp/B00H7D0G8O) OSRAM$10.574.6★2042%▲rising 15 ![Ruiandsion 2pcs 7507 BAU15S LED Bulb Amber PY21W Single Contact Bayonet Replacement for Car Turn Signal Lights Non-polarity](https://m.media-amazon.com/images/I/41EsxMkTU2L.jpg) [**Ruiandsion 2pcs 7507 BAU15S LED Bulb Amber PY21W Single Contact Bayonet Replacement for Car Turn Signal Lights Non-polarity**](https://www.amazon.com/dp/B09STKW3ZX) Ruiandsion$9.604.2★1532%—flat **~~Showing 15 of 28 — show all ~~** ## **Product shelf** All 28 tracked products in this niche. Top sellersNewestTrending [![SYLVANIA - 7507 Long Life Miniature - Bulb Ideal for Turn Signal Applications (Contains 2 Bulbs)](https://m.media-amazon.com/images/I/41QMJCRxYzL.jpg)**SYLVANIA - 7507 Long Life Miniature - Bulb Ideal for Turn Signal Applications (Contains 2 Bulbs)** SYLVANIA**$8.17**4.5★335 reviews](https://www.amazon.com/dp/B01LX8ZU3L) [![AUXLIGHT 7507 1156(150) BAU15S LED Bulbs Extremely Bright PY21W 12496 7507AST 2641A Replacement for Turn Signal Lights 2200K Amber Yellow (Pack of 2)](https://m.media-amazon.com/images/I/41Hne5sYcUL.jpg)**AUXLIGHT 7507 1156(150) BAU15S LED Bulbs Extremely Bright PY21W 12496 7507AST 2641A Replacement for Turn Signal Lights 2200K Amber Yellow (Pack of 2)** AUXLIGHT**$19.44**4.5★407 reviews](https://www.amazon.com/dp/B0BBZV7V5K) [![AUXITO CANBUS 7507 BAU15S LED Bulbs Amber Yellow with Built-in Resistor PY21W 12496 2641A 1156(150) Anti Hyper Flash Error Free Front Rear Turn Signal Lights and Blinker Parking Lights Pack of 2](https://m.media-amazon.com/images/I/51V1HnG937L.jpg)**AUXITO CANBUS 7507 BAU15S LED Bulbs Amber Yellow with Built-in Resistor PY21W 12496 2641A 1156(150) Anti Hyper Flash Error Free Front Rear Turn Signal Lights and Blinker Parking Lights Pack of 2** AUXITO**$36.14**4.5★35,933 reviews](https://www.amazon.com/dp/B0GS54YR8S) [![ALKOREY-1156 S25 PY21W Miniature Bulb 2100K Amber Light 12V 21W Ba15s Replacement for Turn Signal Lights Back-Up/Reverse Lights 2 Pack](https://m.media-amazon.com/images/I/41UrV4kVRvL.jpg)**ALKOREY-1156 S25 PY21W Miniature Bulb 2100K Amber Light 12V 21W Ba15s Replacement for Turn Signal Lights Back-Up/Reverse Lights 2 Pack** ALKOREY**$7.16**4.1★61 reviews](https://www.amazon.com/dp/B0DZCQTQ9N) [![BlyilyB 2-Pack 9-30V BAU15S PY21W 7507 High Brightness Low Power Amber Yellow LED Bulbs Replacement For Turn Signal Lights](https://m.media-amazon.com/images/I/41IAu0b9SpL.jpg)**BlyilyB 2-Pack 9-30V BAU15S PY21W 7507 High Brightness Low Power Amber Yellow LED Bulbs Replacement For Turn Signal Lights** BlyilyB**$9.65**4.4★319 reviews](https://www.amazon.com/dp/B0837SZZRW) [![OXILAM 7507 PY21W BAU15S LED Bulbs Amber Yellow 2800LM for Turn Signal Lights with Build-in Load Resistor CANBUS Error Free 2641A 12496 7507AST Bulb Replacement (2PCS)](https://m.media-amazon.com/images/I/51orL07DDEL.jpg)**OXILAM 7507 PY21W BAU15S LED Bulbs Amber Yellow 2800LM for Turn Signal Lights with Build-in Load Resistor CANBUS Error Free 2641A 12496 7507AST Bulb Replacement (2PCS)** OXILAM**$21.28**4.3★13,763 reviews](https://www.amazon.com/dp/B07RMX2XK6) [![LASFIT T3 7507 LED Bulb Amber PY21W BAU15S Canbus Ready Turn Signal Lights Built In Resistor 2641A 12496 For 2012-2021 VW Tiguan Front And 2018-2022 Honda Accord Rear Automotive Plug and Play(2pcs)](https://m.media-amazon.com/images/I/41WdIHOgynL.jpg)**LASFIT T3 7507 LED Bulb Amber PY21W BAU15S Canbus Ready Turn Signal Lights Built In Resistor 2641A 12496 For 2012-2021 VW Tiguan Front And 2018-2022 Honda Accord Rear Automotive Plug and Play(2pcs)** LASFIT**$52.53**4.5★1,589 reviews](https://www.amazon.com/dp/B0CYKSWPBL) [![ALKOREY-1157 Py21/5w Amber Light Miniature Bulb Mini Bulb 2100K Taillight Turn Signal Light 12V 21/5W Bay15d 2 Pack](https://m.media-amazon.com/images/I/41RZkRff9-L.jpg)**ALKOREY-1157 Py21/5w Amber Light Miniature Bulb Mini Bulb 2100K Taillight Turn Signal Light 12V 21/5W Bay15d 2 Pack** ALKOREY**$7.16**4.5★349 reviews](https://www.amazon.com/dp/B0DZFGHGQ6) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Brightness/Shine/Glow**41% *“Extremely Bright”* **Size-Overall**17% *“fitment was good with a snug fit in the sockets”* **Quality-Overall**10% *“They seem to be well constructed”* **Value For Money**10% *“Your money well worth”* **Advertised Vs Actual Product**5% *“as advertised”* **Assembly/Installation**4% *“Easy install”* **Efficiency**3% *“Worked perfectly”* **Color**2% *“Color is great”* **Durability**2% *“Durability has been built into the design”* **Ease Of Use**1% *“easy to use”* ### **What buyers complain about ** **Size-Overall**15% *“Didn't fit the car model, as advertised”* **Durability**13% *“Didnt last”* **Quality-Overall**13% *“Cheap Bulbs”* **Compatibility-Overall**11% *“Wrong DO NOT FIT 2014 Jeep Grand Cherokee”* **Value For Money**10% *“These are not worth the money”* **Advertised Vs Actual Product**6% *“Didn't fit the car model, as advertised”* **Color**4% *“personaly I dont like the yellow so wont use em”* **Brightness/Shine/Glow**4% *“they dont shine any brighter”* **Paint Quality**4% *“they are just painted on”* **Functionality-Overall**4% *“DRL does not work”* #### **Top return reasons**- Size-Overall49% - Compatibility-Overall23% - Advertised Vs Actual Product5% - Functionality-Overall5% - Socket/Port/Plug3% - Brightness/Shine/Glow3% - Defective Material/Parts3% - Value For Money2% - Assembly/Installation2% - Color2%