Shopping for: Confirm the part against your engine serial number and application before ordering.
Change engine
GRI-2707 Mack RETAINING RING (Pack of 4)
Commercial diesel differential. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$18.52$38.16
Save $19.64
In Stock
PAI Part #GRI-2707
JAK'S Part #JAKS-GRI-2707
Kit Membership
Used In These Kits
This part is included in 2 engine & overhaul kits — find yours below.
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GBK-6561Mack BEARING AND SEAL KIT In stock -
GBK-6562-100RETAINING RING KIT In stock - No kits match that search.
Complete The Rebuild
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
Sold in a pack of 4. Price shown is for 4 pieces.
RETAINING RING
Fits:
- MACK TRL-107 TRANSMISSION 5-SPEED
- MACK TRL-1076/1078 TRANSMISSION 5-SPEED
- MACK TRXL-107 TRANSMISSION 6-SPEED
- MACK TRDXL-107 TRANSMISSION 6-SPEED
- MACK TRDL/TRDLG-107,1070 TRANSMISSION 10-7 SPEED
OEM cross-references:
- MACK 503KC12
Warranty: 24 months
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.






