STANLEY FNA B3800B compressor pump 4.0HP

Name: Air compressor pump with drive X370000B
Brand: STANLEY
SKU: 12057747
Price: 285.49 EUR
Availability: InStock

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Air compressor pump with drive pulley STANLEY FNA B3800B 4.0HP (replacement part, MPN X370000B)

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Short description

Replacement air compressor pump STANLEY FNA B3800B with drive pulley, rated at 4.0 HP (MPN X370000B, EAN 1110003645890). Designed as a service or spare part for compatible stationary compressors, it provides the core compression unit for delivering pressurized air. Suitable for workshop and light industrial applications where the pump head and pulley assembly need replacement.

Available for order: 2 pcs.

Warranty: 2 Years

SKU: 12057747

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2b. Kengaraga str., Riga, Latvia, LV-1063

06.07.2026 {{selectedOffer.officeDeliveryString}}

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From 4.99 €

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36 months installment: from 7.93 euros per month

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Product information

Description

The STANLEY FNA B3800B replacement air compressor pump with drive pulley is a service part designed to restore the mechanical compression stage of compatible stationary compressors. Rated at 4.0 HP, this pump assembly includes the pump head and a matched drive pulley to transfer torque from the compressor motor. It is intended for situations where the original pump head or pulley has worn, failed, or requires replacement during routine maintenance.

Advantages

This replacement pump provides a direct-fit solution for compatible compressor models, reducing downtime by restoring the core compression component without replacing the entire unit. The integrated drive pulley is balanced to work with common belt systems, helping to maintain efficient power transfer and consistent operating speeds. Designed for workshop and light industrial use, the pump head is constructed to withstand repeated start‑stop cycles and typical service conditions.

Suitable for

Repairing stationary workshop air compressors
Replacing worn or damaged pump heads
Service parts inventory for maintenance teams
Light industrial compressed air applications

Key specifications

Rated power: 4.0 HP (pump assembly output rating)
Configuration: pump head with integrated drive pulley
Mounting: compatible with standard stationary compressor mounting arrangements
Drive interface: pulley designed for belt-driven motors
Application environment: workshop and light industrial use

How to use

Ensure the compressor is isolated from power and fully depressurised before beginning work. Remove the existing pump head and pulley following the manufacturer service instructions, then align the replacement pump assembly to the mounting points and secure fasteners to the specified torque values. Refit the drive belt, adjust belt tension according to the compressor manufacturer's guidelines, and verify pulley alignment. After reassembly, perform a leak test and run the compressor under observation to confirm normal operation and correct pressure delivery.

Usage recommendations

Use with compatible stationary compressor models and follow the compressor manufacturer's maintenance procedures. Regularly inspect belt condition and pulley alignment, and ensure appropriate lubricant and service intervals for the compressor system.

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Customer questions

FAQ

How much does the STANLEY FNA B3800B compressor pump 4.0HP cost, and is it available for purchase?

The price is 285.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can STANLEY FNA B3800B compressor pump 4.0HP be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the STANLEY FNA B3800B compressor pump 4.0HP online, and the application process is as simple as possible:

Select the product on the website and add it to your cart;
When placing your order, choose the payment method “Installments”;
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Receive a decision within a few minutes.

For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All STANLEY products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized STANLEY service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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