General Pump EP181217 Solid Shaft Pressure Washer Pump (Replacement for T991)
- Trusted by Pros and DIYers Nationwide
$680.47
- Fast Shipping·Expert Support·Secure Checkout
- Not sure which option you need? Call our team before ordering →
Product Information
This GP T991 Pressure Washer Pump with 4.0 GPM 1100 PSI @ 1750 RPM performance boasts a compact size for make them perfect for portable hot water pressure washers.
Product Details
General Pump’s T Series 50 of Pressure Washer Pumps boast a compact size for make them perfect for portable hot water pressure washers. Their forged brass manifolds feature an exclusive lifetime warranty. They also feature a die-cast, anodized aluminum, oil-bath crankcase; solid ceramic plungers with continuously lubricated packings; and are the original Interpump unitized stainless steel K01 inlet and outlet valves.
Features include:
- Forged brass manifold with a an exclusive lifetime warranty
- Die-cast, anodized aluminum, oil-bath crankcase
- Solid ceramic plungers with continuously lubricated packings
- The original Interpump unitized stainless steel K01 inlet and outlet valves
- Standard 24 mm solid shaft for pulley mounting
Specifications:
- Maximum Volume: 4.0 GPM
- Maximum Discharge Pressure: 1100 PSI
- Maximum Pump Speed: 1750 RPM
- Maximum Inlet Pressure: 125 PSI
- Plunger Bore: .787 in. / 20 mm
- Plunger Stroke: .394 in. / 10.0 mm
- Crankcase Oil Capacity: 15.2 oz.
- Maximum Fluid Temperature: 165 F
- Inlet Port Thread: 1/2″ – 14 BSP-F
- Discharge Port Thread: 3/8” – 19 BSP-F
- Shaft Diameter: 1.0 in. / 25.4 mm
- Weight: 19.0 lbs.
- Dimensions: 9.3″ x 8.3″ x 5.4″
Shipping & Delivery
-
Fast nationwide shipping via UPS
Most orders arrive within 5–10 business days. -
Direct-from-manufacturer items may take up to 14 business days
If a product will take longer than expected, a PowerWash.com account executive will contact you. -
Backorder notifications
If an item becomes unavailable or delayed, our team will notify you immediately with options. -
Freight delivery for large equipment
Oversized items ship by truck freight. Lift-gate service is available if needed. -
Alaska & Hawaii shipping
Delivery to AK/HI may take up to 30 business days. (Some chemical products cannot ship to AK/HI.) -
International shipping available
We ship to most countries worldwide. Call 1-800-433-2113 for rates. -
Order minimum
Orders under $15 may incur a minimum order fee. -
Track your order anytime
You can check your order status using the Orders & Returns page.
Returns & Warranty
30-Day Return Window (Unused Items)
Unused products in original packaging can be returned within 30 days of delivery.
Simple Return Process
Just contact our team to receive an RMA (Return Authorization) before sending anything back.
Restocking Fee
Returns may be subject to a 20% restocking fee.
Non-Returnable Items
Due to safety and usage factors, the following items cannot be returned:
– Pressure washers (covered under warranty only)
– Chemicals / hazmat products
– Custom or special-order equipment
Manufacturer Warranties Apply
Many products are backed by manufacturer warranties (pumps, engines, accessories, etc.).
Coverage varies by brand and product type.
Defective or Damaged Items
If something arrives damaged or defective, contact us immediately so we can make it right.
Support
Support & Questions
Talk to a real pressure washing expert
Our team helps contractors choose the right equipment, chemicals, and setup.
Need help before ordering?
We can help you confirm:
– Proper sizing (GPM, PSI, fittings)
– Product compatibility
– Best setup for your job
Support after purchase
We’re here to help with setup, usage, and troubleshooting.
Call or speak with our team
1-800-433-2113
Fast response from experienced staff
No call centers — you’ll speak with someone who understands the equipment.
Get It Right The First Time
No guesswork. No wrong orders.
- Fast Shipping
- Contractor Support
- Financing Available
