Skip to content
Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

Volvo Penta — M8 × 50 mm Flange Screw — 984739

Original price $2.70 - Original price $2.70
Original price
$2.70
$2.70 - $2.70
Current price $2.70
Availability: 9 in stock at Marisol
In stock items ship same or next day.

Free returns on all eligible orders

You have 30 days to request a return. All sale items are final sale.

Volvo Penta Flange Screw 984739 — M8 × 50 mm

Volvo Penta flange screw 984739 is specified for select marine diesel engine assemblies, including charge-air cooling and other engine component mounting. Check your engine's parts diagram and serial number because location and quantity vary by installation.

Compatible Applications

  • D6-300, D6-340, D6-380, D6-400, and D6-440 G-series: applicable charge-air cooler assemblies; diagram position 13 shows four screws in the cited installation
  • D8A: applicable engine assemblies
  • D11C: applicable engine assemblies
  • D13B and D13C: applicable engine assemblies
  • D16C: applicable engine assemblies

Confirm the exact model, serial number, and diagram location before ordering. The diagram count is not the quantity included with one purchase.

Part Details

  • Brand: Volvo Penta
  • Part number: 984739
  • Product type: flange screw
  • Size: M8 × 50 mm (length approximately 1.97 in.)
  • Applications include charge-air cooling, lubrication, cooling, fuel, electrical and bracket mounting where specified

Service Guidance

Replace the screw if its threads or flange head are damaged, corrosion prevents correct tightening, or it cannot be securely reused. Inspect mating threads and surrounding hardware and follow the applicable service instructions for torque.

Technical FAQ

Are four screws included? Four is the quantity shown in the cited D6 charge-air cooler assembly, not a package quantity. Confirm the number needed for your repair.


Parts Desk Insights

Best use: Replacing the specified screw in a matching engine assembly. Common mistake: Matching a loose fastener only by appearance, or mistaking the diagram count for the purchase quantity. Sizing and fitment: Check M8 × 50 mm, part 984739, engine serial number, and diagram position.

Shipping information

In-stock and OEM parts: ship same or next business day.

Locally warehoused items: ship within 1-3 business days.

Special-order items: timeline confirmed after order.

Returns & warranty

Returns & Satisfaction Guarantee

We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.

If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.

To qualify for a return:


  • Item must be in new, unused condition

  • Product must be in its original packaging

  • All parts, components, hardware, manuals, and accessories must be included

  • Packaging must be undamaged and suitable for resale

Important:

Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.

We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.

For return authorization, please contact our support team before shipping anything back.

Free Shipping

When you spend $150 or more

Here to Help

Get in touch with us

Store Pickup

Pick up your order yourself, for free

Easy Exchanges

Return or exchange within 30 days