1. Fuel Tanks & Filler Necks Deals
  2. sku: 23115175945684633
  3. MARINEPARTSDISTRIBUTORS ACU7000B3

MARINEPARTSDISTRIBUTORS ACU7000B3 Fuel Tank Selector Valve S15

fits model: C1500, C3500, C2500. make: Gmc. year: 1979–1991.

Acu7000b3 Marinepartsdistributors Fuel Tank Selector Valve 1979-1991 Gmc C1500 C3500 C2500 S15 Oem Grade Acu7000

( Brand: Marinepartsdistributors ), ( Manufacturer Part Number: ACU7000B3 ), ( Part Type: Fuel Valve Tank ), ( California Prop 65 Warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov ), ( Country Of Origin: Taiwan ), ( Source: Aftermarket )

Review MARINEPARTSDISTRIBUTORS Fuel Tank Selector Valve Gmc S15 Oem Grade Acu7000 fits C1500 C3500 C2500 1979–1991

The **ACU7000B3 Fuel Tank Selector Valve** is a precision-engineered component designed exclusively for **1979 through 1991 GMC C1500, C3500, and C2500 series trucks**, including the **S15 models**, ensuring seamless fuel system operation across dual-tank configurations. This high-performance valve is crafted to maintain optimal fuel flow between the primary and secondary fuel tanks, eliminating the risk of fuel starvation during aggressive driving, towing, or off-road maneuvers where fuel demand fluctuates rapidly. Constructed from durable **stainless steel and reinforced polymers**, the ACU7000B3 is built to withstand the harsh conditions of heavy-duty applications, including extreme temperatures, vibration, and exposure to fuel vapors, which can degrade inferior aftermarket alternatives. Its **direct-fit design** ensures a perfect installation without the need for modifications, seamlessly replacing the factory OEM valve while maintaining the original wiring and mounting points for hassle-free integration. The valve features a **robust solenoid mechanism** that operates with precision, switching between tanks with minimal delay, thereby preventing engine stalling or hesitation during critical moments. Whether your vehicle is used for daily commuting, heavy hauling, or off-road adventures, this valve guarantees reliable performance, extending the lifespan of your fuel system and enhancing overall engine efficiency. Ideal for both restoration projects and modern upgrades, the ACU7000B3 is a trusted solution for maintaining the integrity of your GMC s fuel delivery system, ensuring that every mile is driven with confidence and power.

### Pros and Cons of buying a ACU7000B3 Fuel Tank Selector Valve (1979 1991 GMC C1500/C3500/C2500/S15)

#### **Pros**

1. **Compatibility** The ACU7000B3 is specifically designed for 1979 1991 GMC trucks (C1500, C3500, C2500, and S15 models), ensuring a direct fit without major modifications.

2. **Improved Fuel Efficiency** A properly functioning fuel tank selector valve allows for smoother transitions between fuel tanks, reducing engine strain and potentially improving fuel economy.

3. **Prevents Fuel Starvation** A faulty or clogged valve can cause fuel starvation, leading to stalling or rough idling. Replacing it ensures consistent fuel flow.

4. **Durability** The ACU7000B3 is built to withstand the demands of heavy-duty truck applications, reducing the likelihood of premature failure.

5. **Easy Installation** Designed for straightforward replacement, it typically requires minimal tools and time to install, especially if the original valve is removed.

6. **Cost-Effective Upgrade** Compared to rebuilding or replacing an entire fuel system, this valve is a relatively inexpensive solution for a common issue.

7. **Compatibility with Aftermarket Mods** If you plan to add auxiliary fuel tanks or modify your fuel system, a reliable selector valve is essential for proper operation.

#### **Cons**

1. **Potential for Counterfeit Parts** Some aftermarket parts, including fuel tank selector valves, may be counterfeit or low-quality, leading to early failure. Buying from a reputable supplier is critical.

2. **Wiring or Electrical Issues** If the wiring harness or connectors are damaged, the valve may not function correctly even if the unit itself is new. Inspection of the electrical components is necessary.

3. **Compatibility with Modified Systems** If your truck has been heavily modified (e.g., custom fuel lines, additional tanks, or electronic fuel injection changes), the ACU7000B3 may not integrate perfectly without additional adjustments.

4. **Labor Costs** While the valve itself is affordable, installation may require professional labor if you lack mechanical experience, especially if it involves working near the fuel system.

5. **Limited Longevity Guarantee** Unless purchased from a brand with a warranty, there s no guarantee of long-term reliability, though the ACU7000B3 is generally well-regarded for durability.

6. **Possible Leaks** If the valve is not properly sealed during installation, fuel leaks could occur, posing a fire hazard and requiring rework.

7. **Compatibility with Modern Trucks** If you plan to keep the truck long-term and upgrade components (e.g., turbocharging, high-flow fuel pumps), the ACU7000B3 may not be future-proof and could need replacement.

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### **Conclusion**

The **ACU7000B3 fuel tank selector valve** is a solid, reliable choice for 1979 1991 GMC trucks experiencing fuel tank switching issues. Its direct compatibility, durability, and ease of installation make it a practical upgrade for restoring proper fuel system function. However, potential buyers should ensure they purchase from a trusted source to avoid counterfeit parts and inspect the wiring and fuel lines during installation to prevent future problems.

If your truck s fuel selector valve is failing causing rough idling, stalling, or difficulty switching tanks the ACU7000B3 is a cost-effective solution worth considering. For best results, pair it with a thorough inspection of the surrounding fuel system to address any related issues.

### **Recommendation**

- **Buy from a reputable supplier** (e.g., ACU Products, RockAuto, or a trusted local parts dealer) to ensure authenticity and quality.

- **Inspect wiring and fuel lines** before and after installation to avoid electrical or leak-related problems.

- **Consider professional installation** if you re uncomfortable working near the fuel system.

- **Check for warranty coverage** if available, as it provides peace of mind for long-term reliability.

- **Test the valve thoroughly** after installation to confirm smooth operation between fuel tanks.

For most owners dealing with a faulty fuel selector valve, the ACU7000B3 is a **strong recommendation** due to its proven performance and compatibility with these GMC models.

Details:

Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but designed to function same as - if better than. All parts sold are new. As a parts distributor we mostly sell aftermarket any OEM would be noted as such.: FUEL TANK SELECTOR VALVE, SPECIFICATIONS: NOTES: MOTOR DRIVEN; WILL NOT WORK WITH QUICK DISCONNECT LINES, FIT: DIRECT FIT, REPLACES: MANUFACTURER PART NUMBER: ACU70 Product Notice.

specifications fueltanksysteme:

  • for models: C1500, C3500, C2500
  • for makes: Gmc
  • for years: 1979-1991
  • brand: Marinepartsdistributors
  • mpn: Acu7000b3
  • part type: Fuel Valve Tank
  • california prop 65 warning: This Product May Expose You To Chemicals Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. For More Information Go To Www.p65warnings.ca.gov
  • country of origin: Taiwan
  • source: Aftermarket

shipping fueltanksysteme:

  • class: Economy, Standard, Expedited, One-day
  • cost: $0.00
  • service: Economy, Standard, Expedited, Overnight
  • type: Fixed
  • transit: 3-9 Days

seller fueltanksysteme:

  • rating: 98.7%
  • city: Deerfield Beach, Florida
  • # reviews: 22056

returns fueltanksysteme:

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

offer fueltanksysteme:

  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: March 17, 2026
  • quantity: 7

general fueltanksysteme:

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

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for models: c1500, c3500, c2500, for makes: gmc, for years: 1979-1991, part type: fuel valve tank, california prop 65 warning: this product may expose you to chemicals which are known to the state of california to cause cancer and birth defects or other reproductive harm. for more information go to www.p65warnings.ca.gov, country of origin: taiwan, source: aftermarket,
category: auto parts > car truck parts accessories > air fuel delivery > fuel tanks filler necks, sku: 23115175945684633,
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