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La Marzocco

La Marzocco S/S Reducing Nipple G3/8M × G1/4M – A.5.188

Stainless-Steel Construction G3/8 to G1/4 Genuine OEM Fitting

Item Number: lm-A5188

RRP $29.90 Save $5.40 Your Price $24.50
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Categories: Spare Parts
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Description

La Marzocco Stainless Steel Reducing Nipple G3/8M × G1/4M – A.5.188

The La Marzocco A.5.188 is a genuine OEM straight reducing nipple designed to connect components with G3/8 and G1/4 female threads.

Manufactured from stainless steel, the fitting provides a strong, corrosion-resistant connection within compatible La Marzocco pump and hydraulic systems. Its 20 mm hex section allows the fitting to be securely installed using the correct spanner.

Always confirm the part number against the machine’s technical diagram before installation.

What's in the box?

  • 1 × La Marzocco Stainless Steel Nipple G3/8M × G1/4M – A.5.188 Sealing washers, thread seals and adjoining hydraulic components are not included.

    Specs

  • Brand: La Marzocco
  • Product type: Straight reducing nipple
  • Manufacturer part number: A.5.188
  • Unformatted MPN: A5188
  • Larger connection: G3/8 male
  • Smaller connection: G1/4 male
  • Thread standard: BSPP parallel thread
  • Hex size: 20 mm
  • Manufacturer designation: WR20
  • Material: Stainless steel
  • Compatibility: Selected La Marzocco hydraulic and pump assemblies
  • Installation: Professional installation recommended

    Features:

  • Genuine La Marzocco OEM fitting
  • Stainless-steel construction
  • G3/8 male to G1/4 male configuration
  • Straight reducing-nipple design
  • 20 mm hex for installation
  • Corrosion-resistant finish
  • Suitable for pressurised coffee-machine water systems
  • Manufactured to La Marzocco specifications
  • Designed for compatible pump and hydraulic assemblies
  • Compact and durable service component

    Confirm Against the Parts Diagram

    Recommended for technicians replacing a damaged, worn or incorrect fitting within a compatible La Marzocco hydraulic system.

    Check the thread sizes and manufacturer part number against the machine’s parts diagram before

    Coffee Parts Thoughts

    This is a straightforward OEM fitting, but thread size and sealing method matter. The A.5.188 is the right choice when the machine diagram specifies a stainless-steel G3/8 male to G1/4 male nipple with a 20 mm hex.

  • Specifications
    Brand La Marzocco
    Model A5188
    Warranty 1 Year
    Returns 14 Days Change of Mind (If Unused)
    Shipping & Returns

    Delivery time and costs

    Parts, accessories, Brew Bar and Tea Bar

    Standard delivery

    From $8.95 2-7 business days*

    Express delivery

    From $9.95 1-3 business days*
    Water filters

    Standard delivery

    From $8.95 2-7 business days*

    Express delivery

    From $9.95 1-3 business days*
    Coffee grinders

    Home grinders

    Calculated at checkout 1-3 business days*

    Commercial grinders

    Calculated at checkout 1-3 business days*
    Coffee machines

    Home machines

    Calculated at checkout 1-4 business days*

    Commercial machines

    Calculated at checkout 2-7 business days*

    *Delivery timeframes are estimates and start once your order is dispatched.

    Freight partners

    Within Australia

    Australia Post

    TNT Couriers

    Same day (Sydney metro)

    Capital Transport

    Civic Couriers

    We ship using Australia Post eParcel and a range of courier partners within Australia and internationally. If you are in Sydney, you may also be able to choose same day courier options or Click and Collect from our Pagewood warehouse.

    Shipping cost depends on the items in your cart and your delivery address. You can see the shipping price on the product page (where available) and at checkout before entering payment details.

    Orders placed before 3pm (Sydney time) on a business day are typically dispatched the same day. Deliveries are made Monday to Friday, usually between 8am and 6pm. Standard and express options may be available at checkout depending on the item and destination.

    For more details, visit our shipping and delivery page.

    Warranty

    Our products are supplied through Australian channels and are covered by Australian consumer guarantees and, where applicable, manufacturer warranty. For international orders shipped outside Australia, warranty support may require the item to be returned to Australia for assessment.

    Easy returns

    Most spare parts, accessories and brew gear can be returned within 14 days of purchase, subject to conditions and exclusions. If you paid with an eligible PayPal account, you may be able to claim return shipping costs through PayPal. For full details, read our returns policy.



    The La Marzocco A.5.188 is a genuine OEM straight reducing nipple designed to connect components with G3/8 and G1/4 female threads.

    Manufactured from stainless steel, the fitting provides a strong, corrosion-resistant connection within compatible La Marzocco pump and hydraulic systems. Its 20 mm hex section allows the fitting to be securely installed using the correct spanner.

    Always confirm the part number against the machine’s technical diagram before installation.