Shop All
- Shop By
- New Products
- Hot Sellers
- West Marine Brand Store
- Quick Order
- Gift Cards
- Special Deals
- Products on Sale
- Clearance
- Rebate Offers
- Sweepstakes & Giveaways
- PLUS Product Protection Plan
- West Selectors
- Engine Part Selectors
- Boat Cover Fit Guide
- Bimini Top Fit Guide
- Custom Boat Graphics
- eCatalogs & Flyers
- 2012 Catalog Request
- Annual eCatalog
- Sailing eCatalog
- Saltwater Fishing eCatalog
- Spring Apparel eCatalog
- View All eCatalogs
Men's
- Outerwear
- Casual Jackets
- Fleece
- Layering Garments
- Performance Jackets
- Sweaters
- Sweatshirts
- Foul Weather Gear
- Coastal
- Dinghy
- Inshore
- Ocean
- Offshore
- Casual Apparel
- Boardshorts & Swimwear
- Knit Shirts
- Pants
- Shorts
- T-Shirts
- Woven Shirts
- Accessories
- Belts
- Hats
- Sailing Gloves
- Seabags & Dry Bags
- Sunglasses
- Watches & Timers
- Shoes
- Athletic Shoes
- Boat Shoes
- Boots
- Canvas Shoes
- Sandals & Watersocks
- Socks & Shoe Care
- View All Men's
- Brands
- COLUMBIA
- COSTA
- GILL
- GRUNDENS
- GUY HARVEY
- HENRI LLOYD
- HOOK & TACKLE
- NAUTICA
- OLD HARBOR OUTFITTERS
- O'NEILL
- PELAGIC
- QUIKSILVER
- SLAM
- SPERRY TOP-SIDER
- TOMMY BAHAMA
- UNDER ARMOUR
- WEEKENDER
- WEST MARINE
- ZHIK
Women's
- Outerwear
- Casual Jackets
- Fleece
- Layering Garments
- Performance Jackets
- Sweaters
- Sweatshirts
- Foul Weather Gear
- Coastal
- Dinghy
- Inshore
- Offshore/Ocean
- Casual Apparel
- Capris
- Dresses & Skirts
- Knit Shirts
- Pants
- Shorts
- Swimwear
- T-Shirts
- Woven Shirts
- Accessories
- Hats
- Sailing Gloves
- Seabags & Drybags
- Sunglasses
- Watches & Timers
- Shoes
- Athletic Shoes
- Boat Shoes
- Boots
- Canvas Shoes
- Sandals
- Socks & Shoe Care
- View All Women's
- Brands
- COLUMBIA
- GILL
- GUY HARVEY
- HELLY HANSEN
- HENRI LLOYD
- LIFE IS GOOD
- LOLE
- O'NEILL
- PRANA
- SALT LIFE
- SPERRY TOP-SIDER
- TOMMY BAHAMA
- WEST MARINE
Electronics
- Fishfinders
- Fishfinder & GPS Combos
- Dedictated Fishfinders
- Transducers
- Accessories
- Boat Instruments
- Wind Instruments
- Depth Instruments
- Instrument Systems
- Knot Meter & Log Instruments
- Instrument Accessories
- Electronics Mounts
- GPS
- Marine Handheld GPS
- Outdoor GPS
- See All GPS
- Audio Entertainment
- Stereo Packages
- Stereo Head Units
- Marine Speakers
- Audio Amplifiers
- Audio Accessories
- Video Products
- Marine Communications
- Handheld VHF Radios
- Fixed Mount VHF Radios
- VHF Antennas
- Satellite Communications
- Communication Accessories
- See All VHF
- Autopilots
- Cockpit Pilots
- Below Deck Pilots
- Accessories
- Beacons
- EPIRBs
- PLBs
- Satellite Messengers
- View All Electronics
- Brands
- ACR ELECTRONICS
- CLARION MARINE AUDIO
- FUSION
- GARMIN
- HUMMINBIRD
- ICOM
- JL AUDIO
- KENWOOD
- KVH INDUSTRIES
- LOWRANCE
- MCMURDO
- RAYMARINE
- SHAKESPEARE
- SIMRAD
- SONY
- STANDARD HORIZON
- TACKTICK
- UNIDEN
- WEST MARINE
Boats & Motors
- Inflatable Boats
- Shop All Inflatable Boats
- Slat Floor
- Segmented Floor
- Inflatable Air Floor
- RIBs
- Hypalon Fabric Boats
- PVC Fabric Boats
- Davits, Lifts & Wheels
- Accessories
- Replacement Parts
- Outboard Motors
- Electric
- Gas
- Propane
- Trolling Motors
- Kayaks
- Inflatable
- Rotomold
- Sit-Inside
- Sit-On-Top
- Accessories
- Shop All Kayaks
- More
- Canoes
- Car Top Systems
- Fishing Floats
- Oars
- Paddles
- Rigid Dinghies
- Stand-Up Paddleboards
- Engine Systems
- Anodes
- Engine Parts Selector
- Fuel Additives
- Hydraulic Steering
- Hyrdrofoils
- Mechanical Steering
- Motor Mounts
- Oil Change Pumps
- Trim Tabs
- Two-Stroke Oil
- View All Boats, Motors & Kayaks
- Brands
- CONFLUENCE
- JIMMY STYKS
- LEHR
- MALIBU KAYAKS
- MERCURY
- OCEAN KAYAK
- SEATTLE SPORTS
- TELEFLEX
- TORQEEDO
- WALKER BAY
- WEST MARINE
- YAKIMA
Shoes
- Men's
- Athletic Shoes
- Boat Shoes
- Boots
- Canvas Shoes
- Sandals & Watersocks
- Socks & Shoe Care
- Women's
- Athletic Shoes
- Boat Shoes
- Boots
- Canvas Shoes
- Sandals
- Socks & Shoe Care
- View All Shoes
- Brands
- COLUMBIA
- HELLY HANSEN
- KEEN
- OCEAN MINDED
- O'NEILL
- QUIKSILVER
- SEBAGO
- SPERRY TOP-SIDER
- TEVA
- WEST MARINE
Maintenance
- Paint & Solvents
- Barrier Coats
- Bottom Paint
- Paint Removers
- Painting Supplies
- Primers & Undercoats
- Specialty & Nonskid Paints
- Thinners & Solvents
- Topside Paint
- Cleaners & Protectants
- Bilge Cleaners
- Boat Soap
- Fabric & Vinyl Products
- Lubes & Metal Protectants
- Metal Polishes
- Non-Marine & Auto Cleaners
- Specialty Cleaners
- Wash & Wax Products
- Resin & Fiberglass
- Adhesives
- Epoxy Resin
- Fiberglass & Fillers
- Fiberglass Cloth & Mat
- Gelcoat Repair Kits
- Polyester Resin
- Putties & Sealers
- Resin Pumps & Accessories
- Winterizing & Storage
- Antifreeze
- Boat Stands
- Winter Covers
- More Maintenance...
- Anodes
- Boat Graphics & Lettering
- Building Materials
- Caulking & Sealants
- Fiberglass Polishes & Waxes
- Hoses & Cleaning Tools
- Tools
- Wood Finishes
- View All Maintenance
- Brands
- 3M
- AWLGRIP
- EPIFANES
- EVERCOAT
- KLEAN STRIP
- MAS EPOXY
- MEGUIARS
- PETTIT PAINTS
- RUSTOLEUM
- SEA SHIELD MARINE
- STAR BRITE
- WEST MARINE
- WEST SYSTEM
- Z SPAR
Sailing
- Sailboat Hardware
- Blocks
- Cleats & Stoppers
- Downwind Poles & Cars
- Headsail Furling
- Mast & Standing Rigging
- Sailboat Steering
- Sailing Instruments
- Sailing Winches
- Sailmaking & Splicing
- Shackles, Snaps & Fittings
- Travelers, Tracks & Vangs
- View All Sailboat Hardware
- Running Rigging
- Dyneema & Spectra
- Polyester
- Technora & Kevlar
- Vectran
- Sailing Services
- ONE DESIGN
- West Marine Rigging Services
- Brands
- ANDERSEN
- ANTAL
- BAINBRIDGE
- FACNOR
- FORESPAR
- FSE ROBLINE
- HARKEN
- HAYN
- HOLT
- KARVER
- LEWMAR
- MCLUBE
- NEW ENGLAND ROPES
- RONSTAN
- SAMSON
- SCHAEFER
- SPINLOCK
- WICHARD
- ZHIK
Cruising
- Anchor & Docking
- Anchors
- Chain & Shackles
- Dock & Mooring Lines
- Docks & Accessories
- Fenders, Covers & Hangers
- Ladders & Boat Hooks
- Windlasses, Rollers & Thrusters
- Boats & Outboards
- Inflatable Boats
- Outboard Engines
- Rigid Dinghies
- Electronics
- Audio Entertainment
- Autopilots
- Beacons & Surveillance Cameras
- GPS, Radar & Weather
- Marine Communications
- Weather & Shortwave Radios
- Electrical
- Shorepower
- Batteries & Accessories
- Navigation
- Binoculars & Night Vision
- Charts, Almanacs & Tide Tables
- Compasses & Navigation Tools
- Cruising Guides
- Marine Software
- Sailboat Hardware
- Blocks
- Cleats & Stoppers
- View All Sailboat Hardware
- Ventilation
- Air Conditioning & Cooling
- Heaters & Dehumidifiers
- Galley
- Appliances
- Barbecues
- Cookware
- Refrigeration
- Tableware
Fishing
- Reels
- Baitcasting Reels
- Conventional Reels
- Spinning Reels
- Rod & Reel Combos
- Rods
- Baitcasting Rods
- Conventional Rods
- Spinning Rods
- Rod & Reel Combos
- Fishfinders
- Dedicated Fishfinders
- Fishfinder & GPS Combos
- Trolling Motors
- Bow Mount
- Transom Mount
- Fishing Accessories
- Bait Tanks & Pumps
- Coolers
- Downriggers
- Fillet & Bait Tables
- Nets, Tools, Gaffs & More
- Outriggers
- Rod Holders & Racks
- Tackle Boxes
- View All Fishing
- Brands
- AVET
- BERKLEY
- BLACKTIP
- CALCUTTA
- CANNON
- DAIWA
- MINN KOTA
- MOTORGUIDE
- PENN
- SHAKESPEARE
- SHIMANO

RONSTAN
Cheek Block Curved Base Adapter, Series 40

Model # 1330174 | Manuf. # RF41153

In Stock: Available for immediate shipment.

We Won't Be Beat—Low Price Guarantee

West Marine will gladly match most U.S. based competitor's price on identical, in-stock items within 30 days of purchase.
Learn More

$7.61

Quantity

+ Add to Cart

Add to My List

Earn up to 4% back on this purchase! Learn More

Description

Specs

The West Advisor

Reviews

Cheek Block Curved Base Adapter, Series 40

Cheek blocks can be mounted on masts and booms with this curved surface adapter.

Fits Series 40 cheek blocks

Cheek Block Curved Base Adapter, Series 40

Product Specs

The West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Products related to Cheek Block Curved Base Adapter, Series 40

Mid Range Cars, Parts and Accessories

Harken Mid Range Cars, Parts And Accessories Replqacement Torlon Balls (25) . Midrange traveler end controls allow installation of traveler purchase from 2:1 to 4:1, fastening directly to the track without extra holes in the deck. End control sheaves are free-running 40mm Carbo Blocks, so your...

$18.96

Block Accessories

Harken Block Accessories 1" Stand Up Spring, Fits Bullet Blocks . Ball-and-socket bases allow blocks to articulate so they lead fairly from any direction to any direction. Stanchion base mounts to any 7/8" or 1"dia. stanchion Small and Medium use #10 FHMS; Midrange uses 1/4" FHMS

$0.70

Series 40 Orbit Block Accessories

Ronstan Series 40 Orbit Block Accessories Swivel Shackle Base . Accessories to Ronstan Series 40 Orbit blocks.

$28.01

Stand Up Base

Ronstan Stand Up Base . Stand-up base fits the head post of Series 50 blocks for added versatility. Diamond shape base measures 2" x 3" Pin diameter: 3/16" MWL: 1100lb. Use 3/16" fasteners

$34.81

Schaefer Replacement Sheaves

Schaefer Replacement Sheaves Delrin Sheave, 5/16" Max. Line Dia., 1/16" Od, Id, 7/16" Width . Schaefer sheaves are designed to be compatible with Schaefer products, and are not intended for use in other manufacturer's blocks. For masthead use only. Delrin sheaves are injection molded with UV...

$7.79

Ball & Socket Swivel Base

Ronstan Ball & Socket Swivel Base And . Accepts all Series 38 and 45 swivel top blocks. Holds blocks upright without capsizing. Stainless steel Weighs 2.3 oz

$25.46

Stanchion Mount Base

Harken Stanchion Mount Base . Ball-and-socket bases allow blocks to articulate so they lead fairly from any direction to any direction. Stanchion base mounts to any 7/8" or 1"dia. stanchion Small and Medium use #10 FHMS; Midrange uses 1/4" FHMS

$24.86

Synchro Block Snap Shackles

Lewmar Synchro Block Snap Shackles Shackle, Fits Size 72mm, 22mm Opening Eye Id, Replaces 6mm Pin Dia., 2,420lb. Swl . Adjustable snap shackles fit all Synchro blocks in the 60mm, 72mm, and 90mm ranges. Replaces the standard shackle fitted to all blocks Will also fit all Lewmar Ocean blocks and...

$34.76

Self Contained 16mm Sheave

Harken Self Contained 16mm Sheave . UV-stabilized Delrin sheave Stainless-steel ball bearings 16mm Sheave dia.: 5/8" Width: 5/16" Weight: 1/8oz. Max. line dia.: 3/16" Hole dia.: 3/16" Max. working load: 250lb.

$8.32

Big Boat Car Controls and Parts

Harken Big Boat Car Controls And Parts 25 Replacement Torlon Balls, Fits Cars . For use on offshore boats from 32 65 . Torlon bearings and pivoting shackles for non-vertical loads. See control line options below.

$22.70

Replacement Sheaves

Ronstan Replacement Sheaves Sheave, 2" Dia., 5/16" Bore, 5/8" Width, Aluminum, Oilite Bearing . All are for rope except RF1118, which is also for wire.

$22.91

Find A Store Near You

Shop By

Special Deals

West Selectors

eCatalogs & Flyers

Outerwear

Foul Weather Gear

Casual Apparel

Accessories

Shoes

Brands

Outerwear

Foul Weather Gear

Casual Apparel

Accessories

Shoes

Brands

Network

Fishfinders

Boat Instruments

GPS

Audio Entertainment

Marine Communications

Autopilots

Beacons

Brands

Inflatable Boats

Outboard Motors

Kayaks

More

Engine Systems

Brands

Men's

Women's

Brands

Paint & Solvents

Cleaners & Protectants

Resin & Fiberglass

Winterizing & Storage

More Maintenance...

Brands

Sailboat Hardware

Safety

Running Rigging

Sailing Services

Brands

Anchor & Docking

Boats & Outboards

Electronics

Electrical

Navigation

Sailboat Hardware

Safety

Ventilation

Galley

Reels

Rods

Fishfinders

Trolling Motors

Fishing Accessories

Brands

RONSTANCheek Block Curved Base Adapter, Series 40

We Won't Be Beat—Low Price Guarantee

Cheek Block Curved Base Adapter, Series 40

Cheek Block Curved Base Adapter, Series 40

Product Specs

The West Advisor

RONSTAN
Cheek Block Curved Base Adapter, Series 40