Blackmer 903541 Locknut OEM Pump & Compressor Replacement Part

SKU: 903541

Weight	1.5 lbs
Dimensions	15 × 10 × 2 in

$74.95

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$74.95	0%
5–9	$71.20	5%
10+	$67.46	10%

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Available to order.

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Blackmer 903541 Locknut OEM Pump & Compressor Replacement Part

Specifications & product details

REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

For pump or compressor service parts, the equipment model and revision are the starting point for a reliable match.

Product type	Pump and compressor service parts
Part / SKU	903541

What to check before ordering

Compare the complete host-equipment identification with the applicable parts drawing.
Check the material and seal configuration, and whether the listing supplies one part, a kit or a rotating assembly.
Use the matching service instructions for clearances, seal work and reassembly checks.

Service reminder: A shared diagram or family name does not establish fit across every model. Confirm the individual part reference for your equipment.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

Blackmer installation, operation and maintenance manuals

Explore this product guide · Shop this product group · Ask Regions Supply about this part

Overview

The Blackmer 903541 Locknut is a genuine OEM fastening component designed for use in Blackmer pumps and compressors. This precision-machined locknut is used to secure internal components, helping maintain correct alignment and reliable operation in demanding service conditions.

Manufactured to Blackmer specifications, this locknut is commonly replaced during pump rebuilds, maintenance, and repair procedures, especially in propane, LP gas, and fuel transfer applications.

Key Features & Benefits

Genuine Blackmer OEM locknut
Precision-machined for exact fitHelps prevent loosening due to vibration
Designed for long service life
Ideal for pump rebuild and maintenance workTypical

Applications

Blackmer propane pumpsLP gas and fuel transfer equipmentPump and compressor rebuilds
Industrial maintenance and service operationsTrusted by pump rebuilders, propane technicians, and industrial maintenance professionals.

Product details

Part / SKU	903541

Package includes

Blackmer 903541 Locknut OEM Pump & Compressor Replacement Part

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.