How do I know a part fits my truck?

Every listing shows the truck make, model years, side (left/right) and OEM cross-reference numbers. Match any of your OEM numbers to the listing, or send us your number and we will confirm fitment.

Do you ship the same day?

Orders placed before 12PM Central on business days ship the same day from our US warehouse. Transit is typically 2–5 business days depending on your state.

What is your return policy?

30-day returns on unused parts in original packaging. Wrong part shipped by us? We cover the return label and ship the correct one first.

Do you offer fleet or shop pricing?

Yes. Business accounts get tiered pricing, saved reorders and a dedicated line. Open a business account to see your pricing and order online.

Are these OEM or aftermarket parts?

We sell quality aftermarket parts cross-referenced to OEM numbers, plus select OEM-grade lines. Brand and grade are shown on every listing.

Can I order by part number?

Yes — type any part number or OEM cross reference into the search bar. If it is not listed, send it to us and we will source it.

Detroit DD15 Oil Suction Manifold (A4731803951)

Genuine OEM Detroit DD15 oil suction manifold (A4731803951), HDEP EPA07/EPA10. Restores reliable oil pickup and pump prime on Freightliner Cascadia. Ships from IL.

Engine: Detroit DD15
Emissions: EPA07/EPA10
Grade: Genuine OEM

Brand
- Detroit Diesel
Truck Make
- Freightliner
- Western Star
Quality Tier
- OEM
Fitment
- Detroit DD13/DD15 EPA07-GHG17 (2006-2021)
Condition
- New
Warranty
- 1-Year FleetPro Warranty

Wholesale pricing for approved accounts

Open a FleetPro business account to see fleet pricing and order online. Repair shops, trucking companies & dealers welcome.

Request a business account

Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

Internal Reference: A4731803951

Same-day shipping before 12PM CT from our Illinois warehouse
Part requests and quotes answered within one business hour
30-day returns
1-Year FleetPro Warranty
Wholesale and fleet pricing for approved business accounts
We speak English, Russian, Ukrainian, Romanian, Bulgarian, French and Polish

Detroit DD15 Oil Suction Manifold, Specifications & Fitment

Genuine OEM Detroit oil suction manifold (oil pickup module) for the DD15 engine. It routes oil from the sump to the oil pump; the factory unit's bonded joints are a known failure point, so a clean OEM replacement restores reliable oil pickup and pump prime.

Specifications

Part #: A4731803951
Type: Oil suction manifold / pickup module
Engine: Detroit DD15 (HDEP)
Emissions: EPA07 / EPA10
Brand: Detroit (Genuine OEM)
Grade: OEM

Where it's used

Detroit DD15 oil system in Freightliner Cascadia / Western Star. Replace a cracked or leaking suction manifold to prevent loss of oil pump prime. Pairs with oil pump A4721805601 and seal A4721881480. Ships from IL.

Product Details

Truck Make	Freightliner, Western Star
Brand	Detroit Diesel
Quality Tier	OEM
Fitment	Detroit DD13/DD15 EPA07-GHG17 (2006-2021)
Condition	New
Warranty	1-Year FleetPro Warranty