S-902AL Oil Transfer Pump
The STAR S-902AL Oil Transfer Pump is a lightweight, all-aluminium dual-direction fluid transfer pump designed for operators who need portability and broader chemical compatibility. Both the barrel and head are aluminium, reducing overall weight compared to steel-body pumps while providing natural corrosion resistance.
The dual-direction plunger mechanism draws fluid in on the pull stroke and dispenses on the push stroke. With 350 ml (12 oz.) capacity per cycle, the S-902AL suits applications where compact size and lighter handling matter more than maximum volume per stroke.
Equipped with 8 feet of vinyl hose (4 ft per side) and compatible with a wider range of fluids than steel pumps, including petrol, brake fluid, water and antifreeze. The aluminium construction resists corrosion from these fluids without requiring protective plating.
We at STAR manufacture this transfer gun for marine service crews, motorcycle workshops, mobile mechanics and DIY users who value a lightweight, corrosion-resistant hand pump for varied fluid transfer tasks. 40+ years of manufacturing experience, serving customers across multiple continents with OEM and private label options available.
Rugged Build Quality
- All-aluminium construction: both barrel and head are aluminium, providing a lightweight pump body that naturally resists corrosion from moisture, salt air and chemical exposure.
- Aluminium die cast head: precision-machined head with void-free dense structure for consistent plunger seal contact and long service life.
- Delta type plunger handle: drop-resistant triangular grip provides secure two-finger operation even with wet or oily hands.
- NBR (nitrile rubber) seals: chemical-resistant seals compatible with petroleum fluids, brake fluid, coolants, petrol and spirits.
- 8 ft vinyl hose (2 x 4 ft): flexible PVC hose on both inlet and outlet valves for reach into engine bays, tanks and between containers.
- Dual-direction operation: single plunger stroke draws in or pumps out fluid, eliminating the need for separate extraction and dispensing tools.
- 350 ml (12 oz.) compact capacity: lighter when full than 500 ml pumps, reducing arm fatigue during repeated overhead or awkward-angle transfers.
- Wider fluid compatibility: aluminium body handles petrol, brake fluid, water and antifreeze that can corrode unplated steel over time.
How the S-902AL Works
The S-902AL uses the same dual-direction plunger mechanism as the transfer pump range, with the advantage of lighter weight and broader fluid compatibility:
- Connect: Attach the inlet hose to the source (engine, gearbox, tank, drum) and the outlet hose to the destination container. Each hose provides 4 ft (1.2 m) of reach, totalling 8 ft between source and destination.
- Extract: Pull the Delta handle upward. The plunger creates vacuum inside the aluminium barrel, drawing fluid through the inlet valve. One full stroke fills the 350 ml chamber with thin fluids like engine oil or brake fluid.
- Dispense: Push the handle downward. Positive pressure forces fluid out through the outlet valve and hose. Non-return valves on each port ensure one-way flow per stroke direction.
No priming required. The lightweight aluminium body makes overhead transfers less tiring than heavier steel pumps, which matters when servicing outboard motors, motorcycle engines or equipment in confined spaces.
| Parameter | Value |
|---|---|
| Model | S-902AL |
| Type | Manual Dual-Direction Oil Transfer Pump |
| Mechanism | Plunger Type (Hand Operated, Dual Direction) |
| Capacity | 350 ml (12 oz.) |
| Barrel Diameter (Ø) | 57.15 mm / 2-1/4" |
| Barrel Material | Aluminium |
| Head Material | Aluminium Die Cast |
| Handle Type | Delta Type Drop-Resistant Plunger Handle |
| Hose Length | 8 ft total (2 x 4 ft / 2 x 1.2 m) |
| Hose Material | PVC (Vinyl) |
| Wetted Components | Steel, Aluminium, PVC, NBR |
| Seal Material | NBR (Nitrile Rubber) |
| Recommended Fluids | Fuel Oils, Mineral Oils, Synthetic & Biological Oils, Petrol, Cooling Liquids, Water, Antifreeze, Spirits & Brake Fluids |
| Not Recommended For | Acetone, MEK, Strong Solvents, Corrosive Acids |
| Operating Temperature | -10°C to +60°C |
| Country of Origin | India (Made in Ludhiana) |
| Certifications | ISO 9001:2015, CE, RoHS compliant |
| HS Code | 8413 |
| Warranty | 1 year against manufacturing defects |
| OEM / Private Label | Available (MOQ applies) |
Every S-902AL ships complete with hoses attached and ready to use. No assembly required.
4 ft (1.2 m) Inlet Vinyl Hose
4 ft (1.2 m) Outlet Vinyl Hose
Instruction Manual
Every kit is fully customisable. Alternative hose lengths, materials, or fittings can be specified for OEM orders.
Contact us for custom kit configurations.
The S-902AL's all-aluminium construction provides specific advantages over steel and plastic fluid extractor alternatives:
The S-902AL's lightweight aluminium body and wider fluid compatibility make it particularly suited to these applications:
S-902AL Related Models
Oil Transfer Pump S-901 Full Steel Body
500 ml (16 oz.)
Full Steel Body (Max Durability)
Oil Transfer Pump S-902 Aluminium Die Cast Head
500 ml (16 oz.)
Aluminium Head + Steel Barrel
Oil Transfer Pump S-902CL Clear Tube
500 ml (16 oz.)
Clear Tube (Visible Fluid Level)
Related Product Categories
Buying Guide: When to Choose the S-902AL
The S-902AL occupies a specific niche in the transfer pump range: lightweight aluminium construction with wider fluid compatibility at a compact 350 ml capacity. Here is how it compares:
S-902AL vs S-901 (Full Steel Body)
The S-901 offers 500 ml capacity and maximum drop resistance from its full steel construction. Choose the S-901 for heavy workshop environments where the pump lives in a tool box and gets dropped regularly. Choose the S-902AL when you need lighter weight for mobile work, broader fluid compatibility (brake fluid, petrol, water), or a more compact pump for tight-space access.
S-902AL vs S-902 (Aluminium Head, Steel Barrel)
The S-902 combines an aluminium die cast head with a steel barrel at 500 ml capacity. It is a middle ground: lighter head than the S-901 but heavier barrel than the S-902AL. Choose the S-902 when you want 500 ml capacity with a lighter head. Choose the S-902AL when full aluminium construction and compact 350 ml size are the priority.
S-902AL vs S-902CL (Clear Tube)
The S-902CL uses a transparent polycarbonate barrel that lets you see fluid colour and level during transfer. Choose the S-902CL when visual monitoring matters (contamination checks, measuring volume). Choose the S-902AL when corrosion resistance and lightweight durability matter more than visibility.
When Aluminium Is the Right Choice
Choose aluminium construction when your environment includes salt air (marine, coastal), frequent contact with water or coolant, brake fluid handling, or when the pump travels with you rather than staying on a bench. The natural oxide layer on aluminium provides maintenance-free corrosion protection that steel requires plating or paint to achieve.
OEM and Bulk Buyers
For distributors, importers and OEM partners, the S-902AL offers a differentiated aluminium-body platform with custom branding, packaging and hose options. We at STAR provide private label manufacturing with flexible MOQs and FOB pricing. Contact our export team for partnership details.
Frequently Asked Questions: Aluminium Oil Transfer Pump
What makes the S-902AL different from steel-body transfer pumps?
The S-902AL uses an all-aluminium construction (barrel and head) instead of steel, which provides three advantages: lighter weight, natural corrosion resistance, and wider fluid compatibility. Aluminium weighs roughly one-third of steel at equivalent volume, reducing arm fatigue during extended use. The natural oxide layer protects against moisture and salt without requiring plating. The aluminium body safely handles petrol, brake fluid, water and antifreeze in addition to standard oils, whereas unplated steel can corrode from prolonged contact with these fluids.
What is the capacity of the S-902AL compared to other transfer pumps?
The S-902AL holds 350 ml (12 oz.) per stroke, compared to 500 ml (16 oz.) on the S-901 and S-902 models. The smaller capacity makes the barrel shorter and the pump more compact for tight-space work. For a typical 4-litre oil change, expect 11-12 pump cycles with the S-902AL versus 8-10 with a 500 ml pump. The trade-off is worthwhile when manoeuvrability in confined engine bays or bilge spaces matters more than transfer speed.
Which fluids are compatible with the aluminium barrel?
The S-902AL handles fuel oils, mineral oils, synthetic oils, biological oils, petrol, cooling liquids, water, antifreeze, spirits and brake fluids (DOT 3/4). Aluminium does not react with glycol-based coolants, ethanol-blended petrol or DOT brake fluid the way unplated steel can. Do not use with acetone, MEK, strong solvents or corrosive acids. For concentrated caustic chemicals, use a dedicated chemical pump with PTFE seals instead.
Can I use the S-902AL for brake fluid transfer and bleeding?
Yes, the aluminium body and NBR seals are compatible with DOT 3 and DOT 4 brake fluid. Use the S-902AL to transfer fresh brake fluid from a container into the master cylinder reservoir, or to extract old fluid during a brake bleed. The 350 ml capacity is well-suited to brake service where you transfer small volumes repeatedly. After use with brake fluid, flush with clean brake fluid or isopropyl alcohol before switching to oil-based fluids, as brake fluid residue can contaminate oil.
Is the aluminium body as durable as steel for workshop use?
Aluminium is lighter and more corrosion-resistant than steel, but less impact-resistant if dropped onto hard surfaces. For bench-top workshop use, mobile service and marine environments, aluminium performs excellently. For heavy industrial environments where the pump is stored loose in a metal tool box and dropped frequently, the steel-body S-901 offers greater impact tolerance. The S-902AL's die cast head is engineered with a dense, void-free structure that resists cracking under normal service conditions.
Can I transfer petrol and fuel with this pump?
Yes, the S-902AL is compatible with petrol, diesel and fuel oils. The aluminium body does not corrode from ethanol-blended fuels the way unplated steel can. However, always work in well-ventilated areas when transferring fuel, keep away from ignition sources, and never smoke during fuel transfer. The PVC vinyl hoses are rated for petroleum-based fluids. For large-volume fuel transfer (drums, tanks), consider a dedicated barrel pump for faster throughput.
Does the S-902AL work for marine lower unit and outboard service?
Yes, the S-902AL is particularly well-suited to marine service because aluminium naturally resists salt-air corrosion that destroys unplated steel pumps. Use it for lower unit gear oil extraction, outboard engine oil changes, and winterising antifreeze transfer. The 4 ft inlet hose reaches into lower unit ports on most outboard configurations. After marine use, rinse the exterior with fresh water to remove salt deposits, though the aluminium body tolerates salt exposure far better than steel alternatives.
How many pump strokes does it take to change engine oil?
For a typical 4-litre passenger car engine, expect approximately 11-12 full pump strokes with the 350 ml barrel. Each full pull-stroke fills the barrel with up to 350 ml of warm engine oil. For a motorcycle with 1-2 litres of oil, 3-6 strokes complete the extraction. For thick cold gear oil, partial fills per stroke are normal; warm the fluid first for faster transfer. The consistent barrel volume makes it easy to measure total transferred volume by counting strokes.
Why does my aluminium transfer pump lose suction after several months?
Loss of suction typically indicates a worn or hardened NBR plunger seal rather than a barrel problem. Over time, the nitrile rubber seal can dry out, harden or develop surface cracks that prevent it from creating a tight vacuum against the barrel wall. Inspect the plunger seal for visible wear, cracking or permanent compression set. Replacement seals restore full suction. Storing the pump with a light oil film on the plunger rod extends seal life by preventing the rubber from drying between uses.
How do I prevent cross-contamination when switching between fluid types?
Flush the barrel and hoses with a compatible solvent between different fluid types. When switching from oil to brake fluid: flush with isopropyl alcohol, then pump air through to dry. When switching from brake fluid to oil: flush with clean engine oil to displace brake fluid residue. When switching from coolant to oil: flush with kerosene, then dry. Never mix brake fluid with petroleum oils inside the pump as the residue can contaminate the next fluid you transfer. For workshops handling multiple fluids daily, keeping separate dedicated pumps eliminates cross-contamination risk entirely.
How do I clean the S-902AL after transferring coolant or antifreeze?
Pump clean water through the barrel and hoses 3-4 times to flush glycol residue, then pump air through to dry the internals completely. Ethylene glycol coolant leaves a sticky film if allowed to dry inside the barrel, which can eventually affect plunger seal movement. For the exterior, wipe with a damp cloth. If coolant has dried inside the pump, soak the barrel in warm water for 10 minutes before flushing. The aluminium body is unaffected by water exposure, unlike steel pumps that require immediate drying.
How should I store an aluminium transfer pump long-term?
Store the S-902AL with the barrel empty, hoses loosely coiled, in a dry area away from direct sunlight. Unlike steel pumps, the aluminium body does not require oil film protection against rust during storage. However, the NBR plunger seal still benefits from a light oil coating on the plunger rod to prevent drying and cracking. Avoid storing near strong solvents whose vapours can degrade the NBR seals and PVC hoses. The aluminium body tolerates temperature extremes and humidity without degradation.
Can I use the S-902AL for food-grade oils and cooking oil?
The S-902AL can physically transfer food-grade oils, but it is not certified for food-contact applications. The NBR seals and PVC hoses are not food-grade rated. For occasional transfer of cooking oil in a non-commercial setting, the pump functions correctly. For commercial food processing or any application requiring food-safety certification, use a pump with PTFE seals and silicone hoses that carry food-contact approval. The aluminium body itself is food-safe, but the complete assembly is not.
What safety precautions apply when transferring petrol or brake fluid?
When transferring petrol: work outdoors or in well-ventilated areas, eliminate all ignition sources, do not smoke, and ground the containers to prevent static discharge. Petrol vapours are heavier than air and can travel to distant ignition sources. When transferring brake fluid: wear nitrile gloves and safety glasses as brake fluid damages paint and irritates skin. Avoid contact with vehicle paintwork. Dispose of waste brake fluid at an approved collection point. For both fluids, never leave the pump unattended during transfer and cap containers immediately after use.
Why Global Buyers Trust STAR
We at STAR have been manufacturing oil transfer pumps and fluid handling equipment in our ISO 9001:2015 certified Ludhiana facility since 1980. As a dedicated manufacturer and wholesale supplier, our products are shipped internationally across Europe, Asia, Africa and the Americas with full export documentation and dedicated OEM support.