GATES SX-9740 Fuel Tank Gas Cap Lw 2.7L 3.0L 3.5L L4 V6

( Brand: Gates ), ( Manufacturer Part Number: SX-9740 ), ( Type: Fuel Tank Cap ), ( Placement On Vehicle: Air Fuel Delivery Hardware Fasteners Fittings ), ( Item Width: 3.630 ), ( Item Height: 3.000 ), ( Manufacturer Warranty: Recommended Service Interval ), ( Ipn: C674 56-20 ), ( Compatible Year: 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Gates Fuel Tank Cap )

Review GATES Fuel Tank Cap Toyota 2.7l 3.0l 3.5l L4 V6 Gas Lw fits SIENNA 1999–2019

The **Gates SX-9740 Fuel Tank Cap** is a premium, high-performance replacement part meticulously engineered to restore both the functionality and aesthetic appeal of the fuel system in **1999 through 2019 Toyota Sienna models** equipped with **2.7L, 3.0L, or 3.5L gasoline engines**, including both inline-4 (L4) and V6 configurations. Designed with precision, this fuel tank cap is crafted from durable, corrosion-resistant materials to ensure long-lasting reliability, even in demanding driving conditions. The cap features a **tight-sealing gasket** that prevents fuel vapors from escaping, maintaining optimal fuel efficiency and reducing emissions while minimizing the risk of vapor lock a common issue in older vehicles. Its **ergonomic, easy-grip design** allows for effortless installation and removal, making refueling a seamless process without the frustration of stubborn or poorly fitting caps. Beyond its functional benefits, the Gates SX-9740 stands out with its **sleek, factory-matched appearance**, ensuring a seamless blend with the vehicle s original design. Whether you re restoring a classic Sienna or upgrading an older model for better performance, this fuel tank cap delivers a perfect balance of durability, performance, and visual consistency, making it an essential component for any Toyota enthusiast or fleet owner prioritizing quality and longevity.

### Pros and Cons of buying a Gates SX-9740 Fuel Tank Cap for a 1999-2019 Toyota Sienna (2.7L, 3.0L, 3.5L L4/V6 Gas/LW)

1. **High-Quality Material** Gates is a well-known brand for automotive parts, and the SX-9740 is made from durable materials designed to withstand wear, corrosion, and environmental exposure. This ensures a longer lifespan compared to generic or low-quality aftermarket caps.

2. **Seal Integrity** The cap features a reliable sealing mechanism, reducing the risk of fuel vapors escaping into the atmosphere. This helps maintain proper fuel system pressure and prevents fuel odors from lingering in the vehicle.

3. **Compatibility** The SX-9740 is specifically engineered to fit the 1999-2019 Toyota Sienna models with 2.7L, 3.0L, and 3.5L engines (both inline-4 and V6 configurations, including gas and limited-wheelbase variants). This minimizes the risk of improper fitment issues.

4. **Easy Installation** The design is straightforward, and it typically requires no special tools for replacement. Many users report that it can be installed in under 10 minutes, making it a convenient upgrade.

5. **Prevents Fuel Leaks** Over time, the original fuel cap can degrade, leading to leaks or difficulty in sealing properly. The Gates cap provides a tighter, more secure fit, reducing the chances of fuel spillage.

6. **Environmental Compliance** The cap is designed to meet emissions standards, ensuring that fuel vapors are contained and properly routed through the vehicle s EVAP system, which is crucial for passing emissions tests.

7. **Positive User Feedback** Many Toyota Sienna owners have reported positive experiences with the Gates SX-9740, praising its durability and performance compared to OEM or cheaper alternatives.

---

1. **Cost** The Gates SX-9740 is more expensive than generic or no-name fuel caps. While it offers better quality, the upfront cost may be a deterrent for budget-conscious buyers.

2. **Potential Overkill for Minor Issues** If the original fuel cap is only slightly worn or leaking, a high-quality replacement like the Gates cap may be unnecessary. In such cases, a cheaper OEM or aftermarket cap might suffice.

3. **Availability and Lead Times** Depending on the retailer or region, the Gates SX-9740 might not always be in stock, leading to potential delays in purchase or replacement.

4. **Styling Differences** The Gates cap may have a slightly different appearance compared to the original Toyota part. While functional, some owners may prefer the exact look of the OEM cap for aesthetic reasons.

5. **Mixed Reviews on Thread Fit** In rare cases, users have reported that the threads on the Gates cap do not align perfectly with the fuel tank, requiring careful installation or even a slight adjustment. This is uncommon but worth noting.

---

The Gates SX-9740 fuel tank cap is an excellent choice for Toyota Sienna owners who prioritize durability, reliability, and a tight seal. Its high-quality construction and compatibility make it a strong alternative to the original equipment manufacturer (OEM) part, especially if the original cap is old or damaged. While it comes at a higher cost, the long-term benefits such as preventing leaks, maintaining emissions compliance, and ensuring a secure fit often justify the investment.

For owners experiencing frequent fuel cap issues, difficulty in sealing, or leaks, the Gates SX-9740 is a recommended upgrade. However, if the original cap is still functional and the budget is tight, an OEM or reputable aftermarket cap may be a viable alternative. Always inspect the existing cap for wear before deciding on a replacement.

- Your current fuel cap is leaking, cracked, or difficult to seal.

- You want a long-lasting, high-quality replacement that meets emissions standards.

- You prefer a brand known for reliability over a cheaper generic option.

- Your original cap is still in good condition and only slightly worn.

- You are on a tight budget and can find a compatible OEM or trusted aftermarket cap at a lower price.

Details:

Gates Fuel Tank Cap for 1999 - 2019 Toyota Sienna 2.7L 3.0L 3.5L L4 V6 Gas lw: Status: In Stock.

part #: sx9740 prices

• $20.59-$24.32

specifications fueltanksysteme:

• for models: Sienna
• for makes: Toyota
• for years: 1999-2019
• brand: Gates
• mpn: Sx-9740
• type: Fuel Tank Cap
• placement on vehicle: Air Fuel Delivery Hardware Fasteners Fittings
• item width: 3.630
• item height: 3.000
• manufacturer warranty: Recommended Service Interval
• ipn: C674 56-20
• compatible year: 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007
• core charge: Free No Core Charge
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine Gates Fuel Tank Cap

general fueltanksysteme:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Fuel Tanks Filler Necks

payments fueltanksysteme:

• credit card: Visa
• wallet: Apple-pay
• other

seller fueltanksysteme:

• # reviews: 645682
• city: Indianapolis, Indiana
• rating: 99.6%

shipping fueltanksysteme:

• class: Standard, Expedited
• type: Fixed
• transit: 2-6 Days
• cost: $0.00
• service: Standard, Expedited

returns fueltanksysteme:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer fueltanksysteme:

• availability: In Stock
• started: April 16, 2026
• quantity: 10
• options: Ship-to-home
• sold: 0

Gates SX-9740 Is Similar To:

• 10823 Stant Fuel Tank Cap Carquest Gates Cl 00333420082364 (34% similar) ...(March 25th, 2018)
• 23924 Gates Corporation Fuel Fill Hose (28.1% similar) Suitable for use with gasoline, gasohol blends of ethanol, methanol, ether's. 5 weight lbs. Suitable for diesel and bio diesel to B20. Cuts easily with knife and wire cutters. Also works well on auxiliary fuel tanks recreational vehicles. Note: use Gates super hex clamps for reliable installation ...(May 27th, 2018)
• 23930 Gates Fuel Filler Hose (28.8% similar) ...(November 4th, 2017)
• 23936 Gates Corporation Fuel Fill Hose (28.1% similar) Note: use Gates super hex clamps for reliable installation. Cuts easily with knife and wire cutters. 25 weight lbs. Suitable for use with gasoline, gasohol blends of ethanol, methanol, ether's. Packaging 5 per carton standard pack 8 product attributes type fuel fill hose specifications center line ...(April 25th, 2018)
• 23940 Gates Fuel Filler Hose (28.8% similar) If your looking to increase gas mileage, get better engine performance, or help the environment 123AUTOPARTS on motors is place buy now...(January 24th, 2019)
• 23964 Gates Fuel Filler Hose (28.8% similar) ...(June 30th, 2018)
• 23968 Gates Fuel Filler Hose (28.8% similar) Get in, sit down, hold on, shut up and enjoy the ride...(March 10th, 2018)
• 23972 Gates Fuel Filler Hose (28.8% similar) Thanks again for trusting DI-auto to get you the right part as quickly possible...(October 15th, 2018)
• 24702 Gates Fuel Filler Hose (28.8% similar) ...(April 3rd, 2018)
• 24703 Gates Fuel Filler Hose (28.8% similar) Small manufacture updates to finish or fit may occur on some parts without stock photo. The return address support most times is incorrect. The photos provide a product presentation of part being sold...(May 5th, 2018)
• 24711 Gates Fuel Hose Degree 72053981315 (26% similar) One per package fuel fill hose - angled. Gates fuel fill hose - angled x deg...(September 18th, 2018)