Delivery to
goods.your_address
VEVOR US EN/ USD
Select the country/region, language, and currency you prefer for shopping.
Hello, Sign in
Account & Order
Categories
Deals
Deals by Categories
Shop All Shop All Outdoors Outdoors
Appliances Appliances Automotive Automotive
Tools Tools Plumbing Plumbing
Electrical Electrical Building Materials Building Materials
Sports & Outdoors Sports & Outdoors Heating, Venting & Cooling Heating, Venting & Cooling
More Ways to Save
Bulk Savings
Bulk Savings
Clearance
Clearance
Best Sellers
Best Sellers by Categories
Shop All Shop All Outdoors Outdoors
Appliances Appliances Automotive Automotive
Tools Tools Plumbing Plumbing
Electrical Electrical Building Materials Building Materials
Sports & Outdoors Sports & Outdoors Heating, Venting & Cooling Heating, Venting & Cooling
New
New by Categories
Shop All Shop All Outdoors Outdoors
Appliances Appliances Automotive Automotive
Tools Tools Plumbing Plumbing
Electrical Electrical Building Materials Building Materials
Sports & Outdoors Sports & Outdoors Heating, Venting & Cooling Heating, Venting & Cooling
Inspiration & DIY
Inspiration
Inspiration
DIY Projects & Ideas
DIY Projects & Ideas
Find Store Near You
Member Club
Product Recall
Download VEVOR App
Get $5.00 Off $99.00+ Orders on Your First 3 App Orders
Scan the QR code to download
Home Plumbing Water Filters Whole House Water Filters

Search for "3 8 rv water line"

Outdoors
Plumbing
Automotive
52 Results
Popular
Categories
Price
Under 30
30 ~ 50
50 ~ 100
100 ~ 200
200 ~ 500
500 & Above
Customer Rating
5 stars only
4 stars and up
3 stars and up
2 stars and up
1 star and up
Special Offers
On Sale
Bulk Savings
In Stock
Pickup
Quick look
VEVOR RV Water Filtration System, 3-Cartridge Water Filter System for Campers, Remove Sediments, Chlorine, Bad Tastes, Odors, and Most Contaminants, RV Filter with Bracket for RVs, Boats, Vans
(20)
131.9
131.9
Deal after registering
Member discounted price
0% cash back at checkout.
131.9
Non-PRO Account
131.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filter System, 5-Micron 3 Stage Premium RV Water Filtration System with Three Cartridges and 3/4" Fitting for RVs & Campers, Reduces Sediment, Chlorine, Heavy Metals, Odors and More
(20)
149.9
149.9
Deal after registering
Member discounted price
0% cash back at checkout.
149.9
Non-PRO Account
149.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filter System, 5-Micron 3 Stage Premium RV Water Filtration System Replacement with Three Cartridges for RVs & Campers, Reduces Sediment, Chlorine, Certain Heavy Metals, Odors and More
(20)
60.9
60.9
Deal after registering
Member discounted price
0% cash back at checkout.
60.9
Non-PRO Account
60.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Softener, 16,000 Grain Portable Water Softener, with 3/4" Brass Fittings and 42" Hose, Soften Hard Water Filter System for RVs, Trailers, Boats, Mobile Car Washing, Pressure Washing
(61)
124.9
124.9
Deal after registering
Member discounted price
0% cash back at checkout.
124.9
Non-PRO Account
124.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filter System, 5-Micron Dual Stage Premium RV Water Filtration System with Two Cartridges and 3/4" Fitting for RVs & Campers, Reduces Sediment, Chlorine, Heavy Metals, Odors and More
(20)
97.9
85.99
Deal after registering
Member discounted price
0% cash back at checkout.
97.9
Non-PRO Account
97.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR RV Water Filter System, 5-Micron Premium RV Water Filtration System Replacement with Cartridge and Mounting Bracket for RVs & Campers, Reduces Sediment, Chlorine, Heavy Metals, Odors and More
(20)
51.9
51.9
Deal after registering
Member discounted price
0% cash back at checkout.
51.9
Non-PRO Account
51.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filter System, 0.5-Micron Premium RV Water Filtration System Replacement with Cartridge and Mounting Bracket for RVs & Campers, Reduces Sediment, Chlorine, Heavy Metals, Odors and More
(20)
102.9
102.9
Deal after registering
Member discounted price
0% cash back at checkout.
102.9
Non-PRO Account
102.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Softener, 16,000 Grain, Portable Water Softener with Filter System, NPT 3/4" Fittings, Food-Grade Resin, Quick Connect, for RVs, Trailers, Boats, Mobile Car Washing, Pressure Washing
(61)
155.9
155.9
Deal after registering
Member discounted price
0% cash back at checkout.
155.9
Non-PRO Account
155.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Softener, 12,000 Grain, Portable Water Softener System with NPT 3/4" Fittings, Food-Grade Resin, Quick Connect, Convenient for RVs, Trailers, Boats, Mobile Car Washing, Pressure Washing
(61)
93.9
93.9
Deal after registering
Member discounted price
0% cash back at checkout.
93.9
Non-PRO Account
93.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filtration System, 2-Cartridge Water Filter System for Campers, Remove Sediments, Chlorine, Bad Tastes, Odors, and Most Contaminants, RV Filter for RVs, Boats, Vans
(20)
44.9
44.9
Deal after registering
Member discounted price
0% cash back at checkout.
44.9
Non-PRO Account
44.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filter Replacement Cartridge, 0.2-Micron 3 Pack 3 Stage Premium RV Water Filtration Replacement Cartridge for 2.5" x 10" Filter Housing, Reduces Sediment, Particles, Chlorine, Odors
(1)
31.9
27.99
Deal after registering
Member discounted price
0% cash back at checkout.
31.9
Non-PRO Account
31.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR RV Water Filter Replacement Cartridge, 5-Micron 3 Pack 3 Stage Premium RV Water Filtration Replacement Cartridge for 2.5" x 10" Filter Housing, Reduces Sediment, Particles, Chlorine, and Odors
(1)
25.9
22.99
Deal after registering
Member discounted price
0% cash back at checkout.
25.9
Non-PRO Account
25.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR RV Water Filter Replacement Cartridge, 5-Micron 3 Pack 3 Stage Premium RV Water Filtration Replacement Cartridge for 2.5" x 5" Filter Housing, Reduces Sediment, Particles, Chlorine, and Odors
(1)
26.9
22.99
Deal after registering
Member discounted price
0% cash back at checkout.
26.9
Non-PRO Account
26.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR RV Water Pump, 12V DC 6 GPM (22.7 L/min), 4-Chamber Self-Priming Diaphragm Water Pump with Automatic Pressure Switch, 70 PSI Max Pressure, On Demand for RV, Caravan, Marine, Yacht, Car Washing
(49)
61.9
49.99
Deal after registering
Member discounted price
0% cash back at checkout.
61.9
Non-PRO Account
61.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR RV Water Pressure Diaphragm Pump 3Chambers 110V 3.3GPM 45PSI Adjustable Presssure Fresh Water Pump, Self Priming Sprayer Pump for RV Camper Marine Boat Lawn
(217)
61.9
61.9
Deal after registering
Member discounted price
0% cash back at checkout.
61.9
Non-PRO Account
61.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Pump, 12V DC 5 GPM (18.9 L/min), 4-Chamber Self-Priming Diaphragm Water Pump with Automatic Pressure Switch, 70 PSI Max Pressure, On Demand for RV, Caravan, Marine, Yacht, Car Washing
(49)
61.9
61.9
Deal after registering
Member discounted price
0% cash back at checkout.
61.9
Non-PRO Account
61.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Softener, 16,000 Grain, Portable Water Softener with NPT 3/4" Fittings, Food-Grade Resin, Stainless Steel, Quick Connect, for RVs, Trailers, Boats, Mobile Car Washing, Pressure Washing
(61)
158.9
158.9
Deal after registering
Member discounted price
0% cash back at checkout.
158.9
Non-PRO Account
158.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Tankless Water Heater, Instant Shower with 15 x 15 inches White Door and Remote Controller, 65000BTU Optimized Comfort Performance Hot Water, Ideal for RVers' Family Everyday Use
(260)
259.9
259.9
Deal after registering
Member discounted price
0% cash back at checkout.
259.9
Non-PRO Account
259.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filtration System, Drinking/Washing Water Filter System for Campers, Remove Sediments, Chlorine, Bad Tastes, Odors, and Most Contaminants, RV Filter for RVs, Boats, Vans
(20)
34.9
34.9
Deal after registering
Member discounted price
0% cash back at checkout.
34.9
Non-PRO Account
34.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Pump, 12V DC 4 GPM (15.1 L/min), 3-Chamber Self-Priming Diaphragm Water Pump with Automatic Pressure Switch, 40 PSI Max Pressure, On Demand for RV, Caravan, Marine, Yacht, Car Washing
(49)
54.9
54.9
Deal after registering
Member discounted price
0% cash back at checkout.
54.9
Non-PRO Account
54.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Water Filtration System, Drinking Water Filter System with Replaceable Cartridge for Campers, Remove Sediments, Chlorine, Bad Tastes, Odors, and Most Contaminants, RV Filter for RVs, Boats
(20)
82.9
82.9
Deal after registering
Member discounted price
0% cash back at checkout.
82.9
Non-PRO Account
82.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Tankless Water Heater, Instant Shower with 15 x 15 inches Black Door and Remote Controller, 55000BTU Optimized Comfort Performance Hot Water, Ideal for RVers' Family Everyday Use
(260)
249.9
249.9
Deal after registering
Member discounted price
0% cash back at checkout.
249.9
Non-PRO Account
249.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Tankless Water Heater, Instant Shower with 15 x 15 inches Black Door and Remote Controller, 42000BTU Optimized Comfort Performance Hot Water, Ideal for RVers' Family Everyday Use, Black
(260)
229.9
229.9
Deal after registering
Member discounted price
0% cash back at checkout.
229.9
Non-PRO Account
229.9
Save
Non-PRO Account
Extra 8% off with coupon
In Stock.
Add to Cart
Quick look
VEVOR PEX Pipe, 7/8 inch x 500 FT PEX Tubing, Non Oxygen Barrier Red PEX-B Pipe, Flexible PEX Water Line for RV Sewer Hose, Plumbing, Radiant Heating
(409)
245.9
245.9
Deal after registering
Member discounted price
0% cash back at checkout.
245.9
Non-PRO Account
245.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR 50 Amp Generator Cord, 30 Feet, 125/250V RV Power Cord NEMA 14-50P to SS2-50R with Twist Lock, Grip Handle, Heavy Duty 6AWG/3 + 8AWG/1 Generator Cable, for RV Camper Generator to House, Orange
(11)
185.9
185.9
Deal after registering
Member discounted price
0% cash back at checkout.
185.9
Non-PRO Account
185.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 30 Feet RV Power Cord, 50 Amp, Heavy Duty STW 6/3 + 8/1 Generator Cord, NEMA 14-50P Male NEMA SS2-50R Female Plug, with LED Indicator Handle 15A Adapter, for RVs, generators, campers, ETL Listed
(858)
154.9
154.9
Deal after registering
Member discounted price
0% cash back at checkout.
154.9
Non-PRO Account
154.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR 50 Amp Generator Cord, 50 Feet, 125/250V RV Power Cord NEMA 14-50P to SS2-50R with Twist Lock, Grip Handle, Heavy Duty 6AWG/3 + 8AWG/1 Generator Cable, for RV Camper Generator to House, Orange
(11)
279.9
279.9
Deal after registering
Member discounted price
0% cash back at checkout.
279.9
Non-PRO Account
279.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR RV Tankless Water Heater, Instant Shower with 15 x 15 inches White Door and Remote Controller, 55000BTU Optimized Comfort Performance Hot Water, Ideal for RVers' Family Everyday Use
(260)
249.9
249.9
Deal after registering
Member discounted price
0% cash back at checkout.
249.9
Non-PRO Account
249.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR 50 Amp Generator Cord, 75 Feet, 125/250V RV Power Cord NEMA 14-50P to SS2-50R with Twist Lock, Grip Handle, Heavy Duty 6AWG/3 + 8AWG/1 Generator Cable, for RV Camper Generator to House, Orange
(11)
439.9
439.9
Deal after registering
Member discounted price
0% cash back at checkout.
439.9
Non-PRO Account
439.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR 50 Amp Generator Cord, 100 Feet, 125/250V RV Power Cord NEMA 14-50P to SS2-50R with Twist Lock, Grip Handle, Heavy Duty 6AWG/3 + 8AWG/1 Generator Cable, for RV Camper Generator to House, Orange
(11)
578.9
578.9
Deal after registering
Member discounted price
0% cash back at checkout.
578.9
Non-PRO Account
578.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR 50 Amp Generator Cord, 25 Feet, 125/250V RV Power Cord NEMA 14-50P to SS2-50R with Twist Lock, Grip Handle, Heavy Duty 6AWG/3 + 8AWG/1 Generator Cable, for RV Camper Generator to House, Orange
(11)
157.9
157.9
Deal after registering
Member discounted price
0% cash back at checkout.
157.9
Non-PRO Account
157.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 100ft Heated Water Hose for RV, Heated Drinking Water Hose with Corrugated Cover Antifreeze to -45°F, Automatic Self-regulating, 5/8" I.D. with 3/4" GHT Adapter, Lead and BPA Free
(33)
189.9
189.9
Deal after registering
Member discounted price
0% cash back at checkout.
189.9
Non-PRO Account
189.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 50ft Heated Water Hose for RV, Heated Drinking Water Hose with Corrugated Cover Antifreeze to -45°F, Automatic Self-regulating, 5/8" I.D. with 3/4" GHT Adapter, Lead and BPA Free
(33)
118.9
118.9
Deal after registering
Member discounted price
0% cash back at checkout.
118.9
Non-PRO Account
118.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 25Ft 50 Amp Generator Extension Cord STW 6/3 + 8/1 Generator Cord 125V 250V Generator Power Cord N14-50P & SS2-50R & CS6364 Twist Lock Connectors Tested to UL Standards
(858)
138.9
138.9
Deal after registering
Member discounted price
0% cash back at checkout.
138.9
Non-PRO Account
138.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 15ft Heated Water Hose for RV, Heated Drinking Water Hose with Corrugated Cover Antifreeze to -45°F, Automatic Self-regulating, 5/8" I.D. with 3/4" GHT Adapter, Lead and BPA Free
(33)
65.9
65.9
Deal after registering
Member discounted price
0% cash back at checkout.
65.9
Non-PRO Account
65.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 25ft Heated Water Hose for RV, Heated Drinking Water Hose with Corrugated Cover Antifreeze to -45°F, Automatic Self-regulating, 5/8" I.D. with 3/4" GHT Adapter, Lead and BPA Free
(33)
80.9
80.9
Deal after registering
Member discounted price
0% cash back at checkout.
80.9
Non-PRO Account
80.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 30ft Heated Water Hose for RV, Heated Drinking Water Hose with Corrugated Cover Antifreeze to -45°F, Automatic Self-regulating, 5/8" I.D. with 3/4" GHT Adapter, Lead and BPA Free
(33)
89.9
89.9
Deal after registering
Member discounted price
0% cash back at checkout.
89.9
Non-PRO Account
89.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR Welder Extension Cord, 30 Amp 50 ft, Extension Cord for Portable Welders, NEMA 6-50P, 10/3 AWG, 250V, 7500W Heavy Duty Pure Copper Welder Cable, for Outdoor MIG TIG Plasma, STW Weather-proof
(858)
103.9
103.9
Deal after registering
Member discounted price
0% cash back at checkout.
103.9
Non-PRO Account
103.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 3/8 in Self Sinking Aeration Hose, 100 Ft Long Weighted Pond Aerator Hose Kit, Heavy Duty Rubber Pond Aeration Tubing, Flexible Airline for Lake Water Garden Aerators & Diffusers
(19)
55.9
51.99
Deal after registering
Member discounted price
0% cash back at checkout.
55.9
Non-PRO Account
55.9
Save
Non-PRO Account
Out of Stock
Notify Me Registered
Quick look
VEVOR LLDPE Pond Liner 15x20 ft, Pond Liner 20 Mil, Fish Pond Liners for Waterfall, Pond and Fish Ponds
(156)
75.9
75.9
Deal after registering
Member discounted price
0% cash back at checkout.
75.9
Non-PRO Account
75.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR LLDPE Pond Liner 20x25 ft, Pond Liner 20 Mil, Fish Pond Liners for Waterfall, Pond and Fish Ponds
(156)
119.9
119.9
Deal after registering
Member discounted price
0% cash back at checkout.
119.9
Non-PRO Account
119.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 30 FT 50 Amp Generator Extension Cord STW 6/3 + 8/1, 125V 250V Generator Power Cord N14-50P & SS2-50R & CS6364 Twist Lock Connectors
(858)
157.9
157.9
Deal after registering
Member discounted price
0% cash back at checkout.
157.9
Non-PRO Account
157.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR Hydraulic Top Link Cat. 2-2（8-5/16 in, 19-11/16~28 in), Hydraulic Cylinder with 2 Hoses & G3/8" Check Valve
(108)
229.9
229.9
Deal after registering
Member discounted price
0% cash back at checkout.
229.9
Non-PRO Account
229.9
Save
Non-PRO Account
Extra 5% off with coupon
In Stock.
Add to Cart
Quick look
VEVOR 25' 50A RV Camp Power Cord Generator Cord 6/3 + 8/1 AWG NEMA 14-50P to Bare Wire
(858)
141.9
141.9
Deal after registering
Member discounted price
0% cash back at checkout.
141.9
Non-PRO Account
141.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR Hydraulic Top Link Cat.1-1 (8-1/4 in, 18-1/8~26-3/8 in ), Hydraulic Cylinder with 2 Hoses & G3/8" Check Valve
(108)
195.9
195.9
Deal after registering
Member discounted price
0% cash back at checkout.
195.9
Non-PRO Account
195.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 50' 50A RV Camp Power Cord Generator Cord 6/3 + 8/1 AWG NEMA 14-50P to Bare Wire
(858)
229.9
229.9
Deal after registering
Member discounted price
0% cash back at checkout.
229.9
Non-PRO Account
229.9
Save
Non-PRO Account
In Stock.
Add to Cart
New
Quick look
VEVOR Hydraulic Top Link Cat. 2-2 (11 in Stroke, 22-7/16 in to 33-7/16 in), Max 2900PSI Hydraulic Cylinder with 2 Hoses & G3/8" Check Valves for Tractors
(108)
235.9
235.9
Deal after registering
Member discounted price
0% cash back at checkout.
235.9
Non-PRO Account
235.9
Save
Non-PRO Account
Only 2 Left, order soon
Add to Cart
Quick look
VEVOR Hydraulic Top Link Cat.1-1 (11 in, 20-7/8~31-7/8 in ), Hydraulic Cylinder with 2 Hoses & G3/8" Check Valve
(108)
199.9
199.9
Deal after registering
Member discounted price
0% cash back at checkout.
199.9
Non-PRO Account
199.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 40' 50A RV Camp Power Cord Generator Cord 6/3 + 8/1 AWG NEMA 14-50P to Bare Wire
(858)
203.9
203.9
Deal after registering
Member discounted price
0% cash back at checkout.
203.9
Non-PRO Account
203.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 30' 50A RV Camp Power Cord Generator Cord 6/3 + 8/1 AWG NEMA 14-50P to Bare Wire
(858)
169.9
169.9
Deal after registering
Member discounted price
0% cash back at checkout.
169.9
Non-PRO Account
169.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 15 ft 50A RV Camp Power Cord Generator Cord 6/3+8/1 AWG NEMA 14-50P to Bare Wire
(858)
81.9
90.99
Deal after registering
Member discounted price
0% cash back at checkout.
81.9
Non-PRO Account
81.9
Save
Non-PRO Account
In Stock.
Add to Cart
Quick look
VEVOR 20 FT 50 Amp Generator Cord, STW 6/3 + 8/1 AWG Heavy Duty Extension Cord NEMA 14-50P & SS2-50R & CS6364 Twist Lock, for RV Camper and Generator to House
(858)
112.9
132.99
Deal after registering
Member discounted price
0% cash back at checkout.
112.9
Non-PRO Account
112.9
Save
Non-PRO Account
In Stock.
Add to Cart
Related searches
rv campers rv trailer cable rv power cord extension extension cable near me best extension cable rv extension cable cable rv extension cord for rv power cable extension cord powerful extension cord power extension cord 3 8 50 ft. Refrigerant Line Set best power extension cord power extension 3 8 line set 50 ft
See more
1
You May Also Like
Today's Deals For You
Recently Viewed
Tips & Inspiration
Recommended Searches
50amp extension cord 50a rv cord l5-30p to l5-30r cord rv plug in cord rv plug cord rv camper cord adapter rv cord adapter 10 ft dishwasher supply line 50a cord 50a so cord rv cord 50amp 50amp rv extension rv camper cord 50amp so cord l5 30p rv cord l5-30p to tt-30r cord male to male rv cord l5 30p cord male to male cord rv plug extension cord