New Holland o-ring, 18.8 mm ID × 1.78 mm thick. This OEM-spec part seals the joint against fluid leaks. Listed for 732 New Holland models including the CR11.
Specifications
Technical specifications
11 attributes
Part type
O-Ring
Inner diameter
18.8 mm
Thickness
1.78 mm
Fits
732 New Holland models
Brand
New Holland
Part number (MPN)
9991976
SKU
CT-NHL-9991976
Category
SEALS
Part Number
9991976
Division
BOTH
Kit Available
Yes
Fit & diagrams
Compatibility
Will it fit your machine?
Type your model to confirm it fits — or browse the full compatibility list below.
Equipment models this part fits
Model
Series
CR11
CR SERIES
CR11-A5
CR SERIES TIER 5
CR11-E5
CR SERIES TIER 5
CR11-TR
CR SERIES
CR11-TRA5
CR SERIES TIER 5
CR11-TRE5
CR SERIES TIER 5
CR10
CR SERIES
CR10-A5
CR SERIES TIER 5
CR10-E5
CR SERIES TIER 5
CR10-TR
CR SERIES
CR10-TRA5
CR SERIES TIER 5
CR10-TRE5
CR SERIES TIER 5
WORKMASTER-105
WORKMASTER
WORKMASTER-95
WORKMASTER
WORKMASTER-120
WORKMASTER
T8435
T8.XXX TRACTORS
T8320
T8.XXX TRACTORS
T8350
T8.XXX TRACTORS
T8410
T8.XXX TRACTORS
T8380
T8.XXX TRACTORS
B95D
B D
B95C
B C
T5110
T5. AUTO COMMAND STAGE V
T5120
T5. AUTO COMMAND STAGE V
T5130
T5. AUTO COMMAND STAGE V
T5140
T5. AUTO COMMAND STAGE V
B110C
B C
T7290
T7.XXX AUTOCOMMAND TIER 4B
T7315
T7.XXX AUTOCOMMAND TIER 4B
B95CLR
B C
B110D
B D
B95CTC
B C
LM632
LM - AG
LM635
LM - AG
LM735
LM - AG
LM742
LM - AG
LM935
LM - AG
W80C
W
575E
E SERIES
675E
E SERIES TL/TLB
T7290-HD
T7.XXX AUTO COMMAND STAGE V
T7315-HD
T7.XXX AUTO COMMAND STAGE V
T8415
T8.XXX TRACTORS
T8440
T8.XXX TRACTORS
W70C
W
T4100V
T4.XXNV
T4110V
T4.XXNV
T480V
T4.XXNV
T490V
T4.XXNV
T6145
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T6155
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T6160
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T6165
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T6175
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T6180
T6.120 - 180 DUAL/ELECTRO COMMAND TRACTORS
T8325
T8.XXX TRACTORS
T8355
T8.XXX TRACTORS
T8385
T8.XXX TRACTORS
LM632-NRC
LM - AG
LM635-NRC
LM - AG
Showing the first 10 of 732 compatible models — type your model above to jump straight to it.
Every diagram this part appears in — jump straight to its callout, or browse the whole assembly. Each diagram opens with every part numbered, and each callout links back to its own part page.
If your manual or an old invoice lists one of these, 9991976 is the current number to order. The old numbers bring you to this page.
238-5018
238-6018
594545
66297
70923843
80066297
81825117
84268962
89991976
D32114
MLR2100909
Part guide
New Holland 9991976 o-ring — buyer's guide
~1 min read
New Holland 9991976 is the o-ring Clinton Tractor supplies for this application. It is listed as fitting 732 New Holland models.
What 9991976 fits
Fits: New Holland T9.390, New Holland T9.435, New Holland T9.450, New Holland T9.470-ROWCROP, New Holland T9.480 + 738 more. Commonly ordered for the CR11, CR11-A5, CR11-E5. If your machine isn't listed, check the serial number before ordering.
Which numbers it replaces
9991976 replaces 238-5018, 238-6018, 594545, 66297, 70923843, 80066297, 81825117, 84268962, 89991976, D32114, MLR2100909. If your parts manual or the old box shows any of those numbers, this is the correct current replacement — no fitment change.
Specifications at a glance
This o-ring measures 18.8 mm ID × 1.78 mm thick. The full attribute list is in the Specifications section above.
O-Ring 18.8mm ID x 1.78mm Thk, Hnbr — universal New Holland service part, fits 732 models — 99919769991976 · $2.10
In Stock – in storeIn store
$2.10In Stock – in storeIn store
O-Ring 18.8mm ID x 1.78mm Thk, Hnbr — universal New Holland service part, fits 732 models — 99919769991976 · $2.10
